Maintain and Protect a Secret Folder of Files

So, you want a  completely invisible  and  highly protected  folder of files, for example a private diary, or financial logs, or maybe some pictures you want to hold onto, but you don't want casual visitors to your computer or even nerds to be able to find or uncover this information?


Making a file type can be difficult at times. If you are having trouble doing it, read on to learn how to do it correctly.


Log In to a Terminal Server with Remote Desktop Client

This video demonstrates how to login to a terminal server with Windows Remote Desktop Client. The Remote Desktop Connection Client is used for logging into a virtual terminal server.


This is how to install Windows onto a Virtualbox machine on a Mac OS.


Magnify Your iOS Device with Accessibility Zooming

Everybody seems to know about Apple's  pinch-zooming  on the iPhone, iPod Touch, and iPad. However, pinch-zooming only works within certain applications and items - like photographs, websites, and maps.


You've all been there - your mum fires open your browser, and all that's up is pictures of scantily clad people engaging in naughty behaviour. Or you let your girlfriends sister check her email, and suddenly your Amazon suggestions are full of shoes and handbags.


"Cryptography" is defined as both the practice and study of the techniques used to communicate and/or store information or data privately and securely, without being intercepted by third parties.


Let a Device Charge when You Really Want to Play on It

Ever need to let that tablet charge, when you really would like to play on it? There are a couple of ways to make charging time go by quicker.


Join a Wireless Network from Your iPhone

Connecting to wireless networks, or Wi-Fi, is desirable because it saves your iPhone from using cellular data. If you are using an iPhone for the first time, you may not be aware of how to connect to a wireless network.


You love Macs but you don't have enough money to get one? You want to know how it feels to use one? Well, read on...


This article will show you the step-by-step process on how to lay out an inverter using L-Edit.


Know when You Have Had Too Much Time on the Computer

So, you think you play too much, are your hands hurting? Do your eyes sting? This article will teach you when to turn that power button off and have a rest!


A gaming laptop’s your best weapon of choice if you’re the type of gamer who tends to play everywhere. Video games require high-performance computer parts that casual laptops simply can’t match.


Install Samsung Smart View on a Localized Version of Windows

This will work only on the pro+ versions of windows 7 and 8!(i.e. Not home basic, home premium)


MS DOS 7.1 is a modified version of MS DOS 7.10, which came with Windows 95/98 computers made by someone called Wengier. Included modifications include support for long file names, support for FAT 32 file system, out of the box mouse support, a GUI setup upon boot up, as well as a boot screen.


Jailbreak, Restore and Restore Down Idevices Running 4.0 and 4.

Ever wanted to jailbreak your iDevice or downgrade it, then this is the tutorial for you!


If you'd like to install NOOBS onto a Raspberry Pi, here is what to do.


XBMC, recently rebranded as Kodi, is an open-source media center program that allows you to play videos, music, pictures, games, and more on compatible devices.


If you or your child are pining for the days of 32-bit graphics or floppy drive based DOS games, you may have run into trouble when trying to install these oldies-but-goodies on your new computer.


Chromium OS is the open source version of Google's closed source Chrome OS. Chrome OS is only available on Chromebooks. This guide is intended for people who are familiar with how to install an operating system and have more than basic computer skills.


CentOS is free server distribution for Linux that provides users with a free enterprise-class computing platform, and is currently one of the top Linux distributions in the hosting industry.


Flexi 10 is a graphic-design software used to easily create and design various kinds of signage. Currently, Flexi 10 is only available for Windows computers.


Calculus is a class that can be quite difficult for students. Calculus II, in particular, is notorious for being a weed-out class. The key to success in calculus, much like any other technical class like physics or microeconomics, is to understand, deep down, what every topic is getting at.


Math is not as daunting as it seems, it's all about following simple rules. Repeated use of these rules builds understanding and confidence. This article will teach you how to use and understand those rules.


Math anxiety can be a serious and pervasive problem for many students and professionals. It can present itself in a number of ways, including freezing up, avoiding situations that may require math calculations, or simply experiencing nervousness and anxiety when faced with the need to do math in any setting.


Establishing good basic calculation skills makes all areas of mathematics easier and quicker to complete. Calculating sums in your head can save vital time in exams, but it's not always easy to do those sums in your head.


In fifth grade math, you build on what you learned in third and fourth grade. If you kept up in fourth grade math, you will probably do well in fifth grade math.


Homework can help you process what you’ve covered in class and prepare you for exams. That’s great, but it’s still not always fun! To finish your homework as quickly as possible, you'll need to prepare by establishing good organization, focusing once you sit down to study, and asking for help when needed.


Get put in the advanced math class, and scared you're not good enough? Or maybe you're great at math, and just want some tips? Well whatever the case, follow these steps and you will to!


Though math is an integral part of life, it can be a difficult subject for many. Math anxiety exists in people who feel fear, nervousness, or pressure that inhibits their ability to do math.


Wanna be a know-it-all? Worst Adder in your class? Try this trick!


Math can be a very difficult subject. Unlike English or history, a math test will require you to carefully work through every single aspect of an equation.


Get a Last Minute Passing Grade on a Mathematics Exam

It's only human to be behind in something you were meant to be  studying , and it's fairly normal for students to be way behind in some things with just a decent amount of time left.


Many students find that math is the hardest subject in school probably because you learn a lot of things in a small amount of time, and because numbers are "another language" and your horizons on this language are constantly expanding.


To multiply fractions, all you have to do is multiply the numerators and denominators and simplify the result. To divide fractions, you simply have to flip the numerator and denominator of one of the fractions, multiply the result by the other fraction, and simplify.


Mathematics has been the foundation of many of our scientific and technological discoveries. However, to many children and adults, "math" is a 4-letter word that evokes emotions ranging from dislike and anxiety to outright fear.


Dyscalculia is a genetically inherited learning disability which can make mathematical tasks difficult. Depending on the nature of your dyscalculia, the exact difficulties you might experience will vary.


Expanded form is a way to rewrite a numerical value that breaks up that value into separate digits, showing how much each digit actually represents in the process.


Right angled trigonometry is useful when dealing with triangles and is a fundamental part of trigonometry in general. Using the ratios that come from the right triangle, and understanding the application of the unit circle, you can solve a wide variety of problems involving angles and lengths.


The unit circle is the best tool to have when dealing with trigonometry; if you can truly understand what the unit circle is and what it does, you will find trig a lot easier.


Learning the unit circle will help you not only in trigonometry and geometry, but in future calculus courses as well. It may look like a lot to memorize, but once you understand how it works, you can start with a few numbers and quickly figure out the rest.


The cosine rule is a commonly used rule in  trigonometry.  It can be used to investigate the properties of non-right triangles and thus allows you to find missing information, such as side lengths and angle measurements.


A trig equation is an equation containing one or many trig functions of the variable trig arc x. Solving for x means finding the values of the trig arcs whose trig functions make the trig equation true.


A trig inequality contains one or many trig functions of the variable arc x in the form R[f(x),g(x)...] > 0 (or < 0), in which f(x), g(x),... are trig functions of the arc x. Solving for x means finding the values of the variable arc x whose trig functions make the inequality true.


Did you ever have any trouble remembering the sine or tangent of an angle? This article explains how you can easily find the basic trigonometric numbers of the most common angles.


A theodolite is an instrument based on the mathematical principle of trigonometry, which is used to measure horizontal and vertical angles or planes.


You probably hear all the time that you should check your math work. How to do that, however, might not be clear. There are a number of ways you can check the solution to your math work, depending on whether you are completing basic arithmetic problems, algebra, or word problems.


Math can be hard. Sometimes you might feel overwhelmed and decide that you need to cheat on your next math test. Keep in mind, however, that there can be serious consequences to cheating if caught.


There is more to Math than just equations, theorems, algebra and constructions. Do you think that you could never excel in Math? Feel nervous before a Math test?


A measure of central tendency illustrates the central trend of a set, which is helpful when trying to interpret data.  [1]   Three ways to measure central tendency include mean, median, and mode.


Good math skills can advance you into new worlds that you might not know even exist and high math scores can propel you into a fantastic university as well.


If math is not one of your strong skills, and you struggle with it, read on to learn how you can improve your understanding and excel in the subject.


When studying trigonometry, one of the first things to get your head around is remembering what sines, cosines and tangents do. If you are having trouble grasping the differences, try the memory prompts suggested in this short but effective article.


Finding the perimeter of a triangle means finding the distance around the triangle.  [1]   The simplest way to find the perimeter of a triangle is to add up the length of all of its sides, but if you don't know all of the side lengths you will need to calculate them first.


Degrees and radians are two units for measuring angles. A circle contains 360 degrees, which is the equivalent of 2π radians. This means that 360°  and  2π radians, represent the numerical values for going "once around" a circle.


Whether the subject comes naturally or you struggle to keep up with new concepts, a good connection with your teacher can help you succeed in math class.


Find Exact Values for Trigonometric Functions

The unit circle is an excellent guide for memorizing common trigonometric values. However, there are often angles that are not typically memorized. We will thus need to use trigonometric identities in order to rewrite the expression in terms of angles that we know.


Radians and degrees are both units used for measuring angles. As you may know, a circle is comprised of 2π radians, which is the equivalent of 360°; both of these values represent going "once around" a circle.


Derive the Pythagorean Theorem from Heron's Formula

We are going to derive the Pythagorean Theorem from Heron's formula for the area of a triangle. This is not the best proof since it probably involves circular reasoning as most proofs of Heron's formula require either the Pythagorean Theorem or stronger results from trigonometry.


Hacking a computer is a useful and, at rare times, an important skill to pick up. Below are instructions for getting past a password (if you find yourself logged out of a computer or want to check up on your child or spouse), gaining remote access to a computer (to check on a user or help locate a stolen machine), or crack a wifi password (in the event of an emergency, such as if you become lost in an unfamiliar city and you need to look up directions).


This page is a step by step process to deriving the cosine difference formula through geometric constructions. It is recommended that you know how to find distances via the distance formula.


Though there's no guaranteed way to guess a password, there are several methods that can lead you in the right direction. If you want to know how to guess a password, just follow these steps and you'll be on your way.


Not having sound on your computer can be very frustrating to someone who is not computer adept. Before you throw you computer out the window or take it to a professional, try some of these steps.


Get More Free Space on Cloud Storage Services

Cloud storage services are great solutions for keeping your files safely stored digitally, sharing files with friends and families, and keeping documents in sync between all of your devices.


Get Deleted Files Back from USB or Hard Drive

It’s happened to everyone. You drag some files to your Recycle Bin, and not thinking you empty the bin. Your important documents were in there! All may seem lost, but there are programs available that can potentially recover those files from you.


If you don't know much about camcorders and are planning to get one for Christmas or your birthday and you want the perfect one but there is one problem.


In this article, you will learn methods and techniques to solve integrals with different combinations of trigonometric functions. It is important to mention that the methods discussed in this article are merely rules of thumb; they should not be treated as dogma.


An Arduino is an electronic board with the ability to control outputs such as LEDs, buzzers and motors using either inputs or computer programming. Hailed as the latest advancement in open source electronics, learning to use it will definitely prove an asset to your knowledge.


Get Free QR Code Stickers from Raloco.com

While generating QR-codes online is a popular and free service today, the real-life usage is still impossible without a print. QR-code stickers, labels, custom print solutions all these variants cost money, but what if you want to get it free of charge?


Hootsuite is a web application that lets you manage all your social media account in one place. Hootsuite offers a wide array of services you can take advantage of, with the most basic service plan available for free.


Your old Nokia phone may store its data in the .nbf file format. Other phones don't recognize this data, but a quick adjustment on your computer can solve that issue.


If your pen drive is write-protected, you may not have the ability to modify files or format your drive due to restrictions associated with permissions and sharing.


Formatting an SSD drive is useful in the event you want to sell the drive, dispose of the drive, or install a new operating system. You can format an SSD drive using a Windows or Mac computer.


Playing computer games is a fun and common way to relax after work, school, on weekends or just for the joy of it, but sometimes, lagging games get your blood boiling.


Fix Microsoft Store Downloading Problems

If your Windows computer's "Store" app isn't properly downloading your apps, you have a few different solutions at your disposal, from changing your computer's date and time settings to resetting your store's cache.


The Center of Disease Control and Prevention (CDC) is the national public health institute of the United States and is a federal agency. The CDC site provides medical information on emerging diseases and how to prevent them.


Fix Your Computer when It Is Writing in All Caps

Are you frustrated that your computer is typing in capitals? No worries. Follow this tutorial to fix it.


High CPU usage can be indicative of several different problems. If a program is eating up your entire processor, there's a good chance that it's not behaving properly.


Many people reported Call of Duty: Ghosts crashes ever since the game was released. It crashes after loading or sometimes after completing the first mission.


Do your spidey senses tingle when you enter a room, or walk down the street, and you just  know  you're being watched? These days, you're probably right—spy cams are everywhere, and more are being added every day.


Electron tubes are almost outdated, but there was one time when the electron tube was in every piece of electronic hardware that received or transmitted Radio Frequency signals or accomplished some other electronic function like amplifying sound.


If you own an iOS device running iOS 6 and later, you can FaceTime without Wi-Fi using 3G or 4G data from your wireless service provider. If you use an iOS device running iOS 5 and earlier, you can jailbreak your device and install “My3G,” which is an application that allows you to run Wi-Fi-only applications using your wireless carrier’s 3G network data.


The hunt for refurbished electronics reflects the tenacity of the consumer who is looking for the best bargain on items that he or she will use over time.


Is your desktop background still the same logo that was showing when you got your computer? You can find thousands, maybe millions of free backgrounds online that match any interest.


This wikiHow teaches you how to save an audio CD's contents as one music file on your computer by using VLC Media Player's audio extraction feature.


Fix a Laggy Front Camera on the Samsung Galaxy

While Samsung Galaxy phones provide lots of bells and whistles for users, some seem to develop a laggy camera. If your camera is taking too much time to focus on the image or is delayed in taking the picture after you tap the Capture button, there are some possible solutions.


An ampere, shortened frequently to amp, is a unit of measure that is used for electrical current. Current is the measure of electrons that flow through a given circuit.


A RAR file is a type of file that may contain one or more files in compressed format, and can be useful when moving large files between computers. RAR files can only be extracted on Windows and Mac computers through third-party applications that can read and support RAR files.


Extending the system volume on your computer can benefit you when you need extra space on a hard drive that is currently running low on disk space. By extending your system volume, or partition, your computer will take extra space that is not being used by other partitions, and apply that space to the drive that needs extra volume.


For most typing programs you'll need to order a CD, but here's a way to find an Easy and free typing program, where you won't need to order anything!


That sluggish computer slowing you down? Do you feel like every time you use your computer, you end up completely flustered by the abominable performance your system gives you?


Extract and Edit an Image from Dalet (C SPAN)

Start with step one below to learn how to extract, edit, and upload images from the Dalet program onto the C-SPAN website.


Exit eMPowerMEA When the Computer is Not Responding

Let's say you're in the middle of testing in MEA and your computer suddenly freezes after accidentally hitting a shortcut, or it suddenly stops on you.


Ever wondered how to get make a code but for only certain people to know? This is called encrypting. Encrypting is taking something like a text and messing/mixing it up so that no one can read it, except the people who can decrypt it.


Have you ever wanted to make a circuit board at home? Now you can, for use in all types of homemade electronic components.


This wikiHow teaches you how to reduce the file size of digital photos using Paint for Windows, Preview on Mac, or Adobe Photoshop.


Download Movies and Transfer Them to a USB Flash Drive

This wikiHow teaches you how to move a movie you've downloaded on your Windows or Mac computer onto a USB flash drive. When downloading movies, make sure you aren't breaking any laws in your country by pirating media.


SMART (also known as Self-Monitoring, Analysis and Reporting Technology) is a monitoring system for internal disks and checks for issues when they become big problems.


Enable a Hotspot Without Touching Your Phone with Yosemite

Now, you can enable an instant tether to your iPhone from your Mac! With Yosemite, you are able to use wi-fi anywhere you have cellular reception quickly and easily.


Disable the Menu Show Delay and Make Your Computer Faster

When you stop menu delay it makes Windows faster. Simply it disables delay of menu.


Since the invention of the mobile phone, mankind has been upgrading the mobile phone into better ones, adding features like cameras, music players, internet browsers, bluetooth and many more.


In this digital world, it’s easy to find yourself logged in, online, posting, commenting, and responding almost every minute of every day. Whether it’s out of necessity or just because you don’t want miss anything that’s going on, you can find yourself feeling like you have digital overload.


Download Files from iOS on PC via SHAREit

Have you wanted to get your files from your iPhone or iPad without having to connect it to iTunes via cable? With the SHAREit app, you can. The best part?


A unit rate describes how many units of the first type of quantity corresponds to one unit of the second type of quantity. A good example of a unit rate is miles per hour, with miles being the first quantity and hours being the second.


Do Garfield's Proof of the Pythagorean Theorem

Garfield was the 20th President in 1881 and did this proof of the Pythagorean Theorem while he was still a seated member of Congress in 1876. It is interesting to note that he was fascinated by geometry, like President Lincoln, but was not a professional mathematician or geometer.


Determine the Identity Element of a Mathematical System (Table Method)

When relating mathematical systems to regular mathematical computations, when a number is multiplied or added another number (regardless of what number you apply to it), and which comes out as the second number, mathematical systems work the same way.


“Standard form” has several applications in math and science, so the steps required to change something into standard form will vary based on the desired application.


Mathematical induction is a method of mathematical proof founded upon the relationship between conditional statements.  [1]   For instance, let us begin with the conditional statement: "If it is Sunday, I will watch football."


Mathematical proofs can be difficult, but can be conquered with the proper background knowledge of both mathematics and the format of a proof. Unfortunately, there is no quick and easy way to learn how to construct a proof.


Long division, in algebra, is a tool for simplifying long polynomial expressions. Just as you use regular long division to find factors of large numbers (3624÷14, for example), you can use polynomial long division to find factors of large polynomials.


Calculate the Laplace Transform of a Function

The Laplace transform is an integral transform used in solving differential equations of constant coefficients. This transform is also extremely useful in physics and engineering.


You will learn how to algebraically solve a^n + b^n = a^n * b^n =c^n (whereby two operators are held neutral to each other between constants, rendering a "tipping point") and to graph the final a^n and b^n as x and y1 with c as y2.


Construct Regular Polygons Using a Circle

Constructing regular polygons accurately is very significant in geometry and is easy to do. If you have ever wondered about how to construct regular polygons from a circle, you’re reading the right article.


Euclidean geometry is one of the first mathematical fields where results require  proofs  rather than  calculations.  Proof-writing is the standard way mathematicians communicate what results are true and why.


An isosceles triangle is a triangle with two equal side lengths and two equal angles.  [1]   Sometimes you will need to draw an isosceles triangle given limited information.


Geometry often involves comparing and classifying shapes, line segments and angles. Triangles can be classified by 2 different attributes. A triangle may be named for its angles or for its lines.


Power factor correction allows you to calculate apparent power, true power, reactive power and your phase angle. Consider the equation of a right triangle.


In calculus, when you have an equation for  y  written in terms of  x  (like y = x 2  -3x), it's easy to use basic differentiation techniques (known by mathematicians as "explicit differentiation" techniques) to find the derivative.


Calculus is one of the most important tools used in a variety of sciences, engineering, computers and physics. But it has many other, simpler applications to everyday life as well.


Line integrals are a natural generalization of integration as first learned in single-variable calculus. Rather than an interval over which to integrate, line integrals generalize the boundaries to the two points that connect a curve which can be defined in two or more dimensions.


In vector calculus, divergence and curl are two important types of operators used on vector fields. Because vector fields are ubiquitous, these two operators are widely applicable to the physical sciences.


For many students, calculus is seen as the pinnacle of their math studies. For students who go on to study advanced mathematics, calculus is really just the starting point.


If you have studied calculus, you undoubtedly learned the power rule to find the derivative of basic functions. However, when the function contains a square root or radical sign, such as          x      {\displaystyle {\sqrt {x}}}      , the power rule seems difficult to apply.


To find the derivative of a monomial means to find and expression that can be used to calculate the slope of a tangent line that intersects f(x) at any point (x,y).


Take the Derivative of a Reciprocal (the Reciprocal Rule)

When taking reciprocals,most people just use the quotient rule. Reciprocals are quite important and deserve their own "rule". You can learn it yourself:


Use Calculus to Rotate Curves Around an Axis

You will learn to rotate a curve around the x or y axis using calculus, and calculate volume and surface area, so long as your understanding of calculus steps is up to par (as this is not so much an article in learning calculus and deriving specific answers as it is a means of learning how to make a rotational solid or surface).


A few basic calculus operations are available on a standard graphing calculator. The instructions listed here are for a TI 83 Calculator, and cover Calculus 1 material.


In calculus, there may be a time when you need to differentiate a function        u  v    {\displaystyle uv}       that is a product of two other functions        u  =  u  (  x  )    {\displaystyle u=u(x)}       and        v  =  v  (  x  )    {\displaystyle v=v(x)}      .


In calculus, Lagrange multipliers are commonly used for constrained optimization problems. These types of problems have wide applicability in other fields, such as economics and physics.


The Beta function is a very useful function for evaluating integrals in terms of the  Gamma function . In this article, we show the evaluation of several different types of integrals otherwise inaccessible to us.


Fractions and decimal numbers are simply two different ways of representing numbers that are less than one.   [1]   Since any number below one can be represented with either a fraction or a decimal, there are specific mathematic equations that allow you to figure out what the equivalent of a fraction would be in decimal form, and vice versa.


In vector calculus, Green's theorem relates the behavior of a vector field inside a domain        D    {\displaystyle D}       to the circulation of the field on the boundary of the domain        C  .


In the metric system, grams are used to measure light weights and kilograms are used to measure heavier weights. There are 1,000 grams in one kilogram.


Learning how to count calories is a great way to help you achieve a healthy diet. While most food labels list the number of calories contained in their products, they often times do not list the breakdown of which specific nutrients those calories come from.


A milligram is a measure of mass in the SI (metric) system, while a teaspoon is a measure of volume in the English system. Therefore, this conversion from milligrams to teaspoons requires two stages.


Curie (abbreviated as Ci) is basically a unit of radioactivity (rate of decay). But often it is also used to denote the quantity of a radioactive material such as 1000 Ci of Cobalt-60, 1 Ci of Caesium-137 etc.


The meter (or metre) is a unit of length in the  metric system . It’s the base unit of length in the International System of Units. Mile is used in the United States to measure length.


In vector calculus, the divergence theorem relates the flow of a vector field through a surface to the behavior of the field inside the surface. This theorem has prominent use in physics and engineering.


Do you need to convert grams (g) to pounds (lbs), or pounds to grams?  It's easy to do.  All you need to know is that 1 g = 0.0022 lbs, and thus 1 lb = 453.6 g.  From there, conversion is just a simple multiplication problem.


Converting square feet to cubic feet is easy, as long as you know the depth or height of the final object. Cubic feet is a measure of volume, meaning you need a length, width, and depth measurement.


The ability to convert numbers, fractions and decimals into percentages is necessary knowledge for many industries, including engineering, economics and business.


Understanding the metric system is easy if you know what  base units  means and what the  prefixes  are and how they are used. If you plan to travel the world, study science, or use this world and scientific standard as part of your daily life at home, then understanding the metric system is essential.


The official monetary currency for the United Kingdom is the British pound. The pound is also called the pound sterling. But there are a lot of currencies in the world, and you don't have to live in England to use the pound.


Write Capital and Lowercase Letters in Binary

Since computers process all data as numbers, every symbol–including letters–must be represented by a number.  [1]   And since an uppercase “A” and a lowercase “a” are technically two separate symbols, each must be converted into a unique eight-digit binary number composed exclusively of 1’s and 0’s for a computer to interpret it.


Use Dimensional Analysis to Solve a Conversion Equation (High School Level)

Have you ever wanted to know how to quickly convert from one unit to another where the units weren't in the same form (English to metric units, perhaps)?


A meter is a unit of length in the metric system. It’s part of the International System of Units. Most countries in the world use the metric system (but not the United States, Liberia, and Myanmar.


Estimate Celsius Temperatures in Fahrenheit

Most countries use Celsius as a unit of measurement for calculating the temperature. Many online applications will precisely convert Celsius into Fahrenheit but if you don’t have access to the Internet, use the following techniques to give you a good estimate.


Do Conversions from the US to the British School System

The United States educational system runs differently from ones based on the British one. Here’s how to convert them from one to the other. Sometimes you may have to convert a person’s educational age (e.g. Grade 9, Form 3 etc).


This article teaches you how to convert a given length in yards to feet using a step by step conversion formula.


While it isn’t possible to “convert” watts to amps, it is possible to calculate amps using the relationship between amps, Watts, and voltage. This relationship is different for different types of systems, such as AC or DC power, but will always be the same within a certain type of circuit.


If you used the same unit to weigh molecules and elephants, your measurements would end up really complicated. The international system of units, called SI units, solves this problem by using prefixes.


With all of the different measuring systems in the world, converting units can come in handy. You'll need to understand fractions, unless you are working with the metric system.


Converting from tenths of a pounds to ounces, or vice versa, is a useful skill for a lot of tasks, from cooking to coffee brewing to making your own cosmetics.


Convert Square Meters to Square Feet and Vice Versa

Almost every country in the world uses the metric system of measurement, including square meters to measure area. The United States is a big exception, though, relying on square feet to measure its kitchens and lawns instead.


There are 60 seconds in every minute, so converting seconds to minutes is simple. Just divide the number of seconds by 60 to get your answer!


Convert Percents, Fractions, and Decimals

Converting numbers between percents, fractions, and decimals is a necessary basic math skill. The concepts are quite simple once you learn them. Not only will knowing how to convert small numbers help you on your test, but it is also useful for financial calculations.


There are many tools on the internet that will convert directly from pounds to kilograms, but most school teachers will require you to show your work or you may be looking for an explanation of the actual steps involved.


Converting pounds ( lbs ) to ounces ( oz ) is simple. Since there are exactly 16 ounces in one pound,  just multiply the number of pounds by 16  to make the conversion.


Stuck on a homework problem? Trying to convert your favorite recipe to metric units? Whatever your reason for converting from ounces to grams, don't worry — it's quite easy.


A kilogram is a unit of measuring mass, while a Newton is a unit of measuring force. Newtons, in SI (metric) measurements generally have units of kg-m/sec.


Nanometers and meters are units of measuring length in the SI (metric) system. A nanometer is a very small unit of measure, used to measure things like atoms and molecules.


If you have ever wondered what a vehicle’s speed would be when converted from miles per hour to kilometers per hour, or even if you are a fan of cricket and want to be able to convert the reported speed of pitches, do not fret.


While residents in the United States are used to seeing fuel efficiency as mpg (miles per gallon), there are many other areas of the world that use l/100 km (liters per 100 kilometers).


Not sure how to change a time in minutes to a time in hours? Not to worry! It's easy to make this conversion task in just a few simple steps. As a general rule,  dividing your number of minutes by 60  will give you the same time in hours.


There are many online tools that convert millimeters to inches (mm to in), but most teachers require you to show your work. All you need for any conversion is the "conversion factor" and basic arithmetic.


Converting from milliliters (mL) to grams (g) is more complicated than plugging in a number, because it converts a volume unit, milliliters, to a mass unit, grams.


Many sites on the internet can automatically convert miles to kilometers. However, learning how to do it on your own is a good idea if you ever don't have an internet connection.


The metric system is the most common measurement system in the world, but it is not the only one. Several nations, most notably the United States, are still using pounds to measure weight instead of grams.


Converting meters to yards is as simple as plugging your meters into a simple multiplication problem, but that only works if you know the conversion rate is 1 meter to 1.0936 yards.


There are many tools to do convert meters to feet on the web, but most teachers require you to show your work. It's also a good idea to understand the process yourself, making it less likely that you'll make a mistake.


Meters and millimeters (       m    {\displaystyle m}       and        m  m    {\displaystyle mm}      ) are commonly used metric measurements for length.


Convert Miles to Kilometers by a Math Trick (Fibonacci)

Converting miles (m) to kilometers (km) by a very cool trick of math is fun and weird. Its based on a list (called a sequence) made up, in this case, of numbers that are the sum of the previous two numbers in the list starting with 0 and 1, then add them so it is 1, and add again.


There are many areas of the world that measure fuel efficiency in  l /100 km ("liters of fuel per hundred kilometers"),  fuel/distance units  -- although residents in the United States see fuel efficiency as  mpg  ("miles per gallon"), or m/g  distance/fuel unit , an opposite point of view.


A mile is an imperial unit of measurement commonly used in the United States to determine the distance between two locations. A kilometer is used to measure the same thing but is a metric unit of length.


Converting a measurement from inches to millimeters is a fairly simple mathematical task. Here's how to do it.


Convert Human Height in Centimeters to Feet

Depending on where you live, you're going to get radically different numbers for your height. That's because centimeters, which are on the metric system, are a much smaller unit than inches or feet.


Converting from kilograms to pounds is a common task in the realms of math and engineering, but, luckily, it's an easy one. In most cases, all you need to do to convert is to  multiply the number of kilograms by 2.2 to get the number of pounds .


Converting inches to feet is quick and easy once you know how to do it! The basics to remember are that  there are 12 inches in one foot , so you can get from inches to feet by  dividing by 12 .


There are many tools for converting inches to centimeters on the web, all of which will tell you that  1 inch = 2.54 cm . However, in academic situations, this information is sometimes insufficient, as many teachers will require you to show your work.


Convert Hexadecimal to Binary or Decimal

How do you change those funny numbers and letters to something you or your computer can understand? Converting hexadecimal to binary is very easy, which is why hexadecimal has been adopted in some programming languages.


The binary system is the internal language of electronic computers. If you are a serious computer programmer, you should understand how to convert from binary to decimal.


Gallons and liters are both units of liquid measurement. Gallons are the old, English system of measurement, and liters are from the SI (metric) system of measurement.


Just like the binary numeral system has two possible values for each place-value, the ternary numeral system has three possible values for each place- value.


Hexadecimal is a base sixteen numeral system. This means it has 16 symbols that can represent a single digit, adding A, B, C, D, E, and F on top of the usual ten numerals.


98% of all statistics are made up .  ~Author Unknown   Do not put your faith in what statistics say until you have carefully considered what they do not say .


This type of regression involves fitting a dependent variable (Yi) to a polynomial function of a single independent variable (Xi). The data file used in this article is provided in the link below.


For a variety of reasons, you may have a measurement in feet but need to convert it into yards. This is a very easy process if you know the conversion factor and remember how to use it.


Use a Ti‐84 Calculator to Find the Probability Mass Function for a Binomial Distribution

Do you have a TI-84 calculator? Need to calculate binomial probability mass function? There is a quick and easy way to find your answer!


Randomization is really quite simple, although it seems challenging at times based on the reason for use. Randomizing a list, for example, can be very easy; on the other hand, randomizing a scientific study can be difficult.


Outliers are data points that are outside the normal range of data. They are much higher or much lower numbers than the rest of your data. In order to draw meaningful conclusions from experimental data, you must examine your data for outliers and decide whether or not to eliminate them.


If you bet on sporting events, you must be able to read odds and understand what they mean. Furthermore, you need to quickly calculate the potential winnings for different bets, especially if the odds are changing while the event unfolds.


Use an Excel Formula to Show Multiplication in the Long Form

This is great for checking elementary students math homework (tests) in the long form. This is for multiplying any length digit by a 1 digit number, 2 digit number or a 3 digit number.


Solve Numeral Equations with Negative Numbers

This article is about solving numeral equations with negative numbers. When negatives are involved in your arithmetic, it can be daunting at first, but once you know the basic rules, it's not much harder to solve than a problem that uses positive numbers.


Use Your Fingers to Do the 9s Times Tables

Multiplication is one of the major elementary mathematical operations, along with addition, subtraction, and division. Multiplication refers to the act of "repeated addition": if you want to multiply 3 times 9, then you add up 3 separate groups of 9.


Remember the 9's in Multiplication Using Your Hands

The number 9 is quite a fascinating one. Adding 9 to any number leaves its digital root unchanged, and multiplying any number by 9 results in a number with 9 as its digital root.


In third grade, children often learn multiplication up to 12. This sets them up for the rest of their lives, so it's pretty important. How do you make it interesting and memorable?


Teach the Multiplication of Signed Numbers

Students learn how to multiply two numbers in elementary school. In middle school, they begin working with positive and negative numbers. Students often memorize the basic rules for multiplying numbers with various signs: a positive times a positive equals a positive, a negative times a positive equals a negative, and a negative times a negative equals a positive.


Tired of only being able to multiply one-digit numbers together? Read this article to discover the joy of multiplying any numbers you want!


You can square numbers ending in 5 the same way you square other numbers. A quick way to square any number is by using a calculator; however, when you are squaring a two-digit number ending in 5, you can use an easy method without the aid of a calculator.


Practice Multiplication by Two With Playing Cards

A very easy, effective way to learn or teach multiplication by two, using playing cards.


Multiply Using the Russian Peasant Method

Russian peasant multiplication is an interesting way to multiply numbers that uses a process of halving and doubling.  [1]   Like standard multiplication and division, Russian peasant multiplication is an algorithm; however, it allows you to multiply any two whole numbers using only multiplication and division by 2.


Did you know that there was an alternative way of solving two digit multiplication, called vedic math? Vedic math is an ancient style of multiplying numbers that originated in India.


Line multiplication is sometimes called stick multiplication, and its origins are unclear, with some source claiming it comes from the Japanese,  [1]   Chinese,  [2]   or Vedic cultures.


There are plenty of reasons why you might want to convert feet to meters - for instance, if you're describing your height to a European friend or if a school assignment requires you to do so.


The foot is a type of imperial unit with a length equal to exactly 12 inches. This means that converting from feet to inches is easy —  just multiply by 12.


A cubic foot is a measurement of volume. A cubic foot has a length, width, and height of 1 foot. Similarly, a cubic yard is a measurement of volume that has a length, width, and height of 1 yard.


Being able to quickly multiply is a helpful skill to have. It becomes difficult, however, to complete the standard multiplication algorithm in your head when working with two 2-digit numbers.


Most people can make generalizations about a rate of miles per hour, as this is a standard rate used to gauge how fast cars and other vehicles move.


Both centimeters and millimeters are derived from the "meter," a measurement of distance used in the metric system. The prefix  centi-  means "one-hundredth," so there are 100 centimeters in every meter.


Converting Celsius to Kelvin, luckily, is easy. The Kelvin temperature scale is an absolute thermodynamic scale used commonly in the physical sciences.


Fahrenheit and Kelvin are both units of measurement for temperature. Fahrenheit is often used for surface temperatures in the United States, and Kelvin is often used for scientific equations and calculations.


Ah, snow days! Instead of taking a math test, you get to spend all day watching TV in your pajamas -- or playing in the snow with your friends! Everyone loves a snow day now and then, but how do you know if the murky gray sky above you is going to unleash a foot of snow -- or be nothing more than a disappointment?


A ratio is a mathematical expression that represents the relationship between two numbers, showing the number of times one value contains or is contained within the other.


Charts turn facts and figures into images instead of a string of words and numbers. This lets you quickly locate only the information you're interested in and, when necessary, compare values to one another.


In statistics, the range of a data set is known as the difference between the largest and smallest values. All you have to do to find it is to arrange the set of numbers from smallest to largest and to subtract the smallest value from the largest.


A box and whisker plot is a diagram showing statistical distribution of a data set. This plot makes it easy to see how the data is distributed along a number line.


Perform Hypothesis Testing for a Proportion

Hypothesis testing for a proportion is used to determine if a sampled proportion is significantly different from a specified population proportion. For example, if you expect the proportion of male births to be 50 percent, but the actual proportion of male births is 53 percent in a sample of 1000 births.


The two-sample t-test is one of the most common statistical tests used. It is applied to compare whether the averages of two data sets are significantly different, or if their difference is due to random chance alone.


The IQR is the "interquartile range" of a data set. It is used in statistical analysis to help draw conclusions about a set of numbers. The IQR is often preferred over the  range  because it excludes most outliers.


Pictographs are a great way to interpret data. In a presentation, report, or to illustrate a point, pictographs provide a visual representation of information and numbers.


In statistics, the  mode  of a set of numbers is the  number that appears most often in the set . A data set does not necessarily have to have only one mode - if two or more values are "tied" for being the most common, the set can be said to be  bimodal  or  multimodal , respectively - in other words, all of the most-common values are the set's modes.


You can multiply square roots, a type of radical expression, just as you might multiply whole numbers. Sometimes square roots have coefficients (an integer in front of the radical sign), but this only adds a step to the multiplication and does not change the process.


Ancient Egyptians had many ways to multiply. This can make it easier to multiply, because it only requires the knowledge of how to  multiply  by 2, divide by 2, and how to  add .


The radical symbol (√) represents the square root of a number. You can encounter the radical symbol in algebra or even in carpentry or another trade that involves geometry or calculating relative sizes or distances.


The median is the exact  middle number  in a sequence or set of numbers. When you're looking for the median in a sequence that has an odd amount of total numbers, the process is really easy.


A mixed number is a whole number next to a fraction, such as 3 ½. Multiplying two mixed numbers can be tricky, because you have to convert them to improper fractions first.


Factorials, denoted by a        !    {\displaystyle !}       sign, are products of a whole number and all of the whole numbers below it. It is easy to calculate and multiply two factorials using a scientific calculator’s        x  !


Using the standard algorithm to multiply two 2-digit numbers is sufficient for most purposes; however, its multiple steps can leave you looking for a quick and easy way to find the product of these types of numbers.


Multiplying decimals may look tricky, but it's quite simple if you know how to multiply whole numbers. You can multiply numbers with decimals just as you would multiply whole numbers, as long as you remember to factor in the decimals at the end of the problem.


Multiplying any number by 10 is easy, but multiplying by 9 can be trickier. It’s easy, however, when you recognize the formula        9  x  =  10  x  −   x    {\displaystyle 9x=10x-x}      .


Here are some tips on multiplying by 11.


The prefix  centi-  means “one-hundredth,” so there are 100  centi meters in every meter. You can use this basic knowledge to easily convert centimeters into meters, and vice versa.


In a direct proof, you follow a series of logical statements leading to the statement you wish to prove. Indirect proof is a little trickier. You start with a "what if" statement.


An acre is a an area measurement that was originally defined by how much land an ox could plough in one day.  [1]   Today the definition of an acre is standardized, so that it it easy to convert between acres and other units used to measure area, such as square miles (mi²).


Ever wondered how to convert centimeters to inches? Follow the steps in this article to become a conversion master. You may be surprised by how often this knowledge will come in handy.


This article will explain how to convert binary (base 2) to hexadecimal (base 16). Whether it is for coding, for math class, or for  The Martian,  hexadecimal is useful and powerful shortcut when writing long binary strings.


Change Numbers Into and Out of Scientific Notation

Scientific notation is commonly used in chemistry and physics to represent very large or very small numbers. Changing numbers into and out of scientific notation isn't as hard as it looks.


Converting a decimal to a fraction isn't as hard as it looks. If you want to know how to do it, just follow these steps.


A liter (or litre) is a metric unit used to measure volume or capacity.  [1]   Liters are a common measurement often used to measure beverages and other liquids, such as a 2 liter bottle of soda.


You might have heard of some very gifted people who can calculate the day of the week for any date in their heads quickly and precisely. There are several different ways to make this calculation.


Converting a common fraction into a decimal is easy once you get the hang of it. You can either do it through simple long division, multiplication, or even by using your calculator, if you don't want to do it by hand.


A stone is a measure of weight in common usage in the UK. One stone is equal to 14 pounds. Knowing this conversion rate, it is easy to convert pounds to stones by dividing weight in pounds by 14.


A cubic inch is a measure of volume that is equal to that of a cube measuring 1 inch (2.5 cm) on each side. An object's volume in cubic inches is, thus, the same as that of a certain number of these hypothetical cubes.


Calculate in Your Head the Year when You Know the Month, Day and Day of the Week

We've all heard of some people who can calculate in their heads, quickly (i.e., less than 2 seconds) and precisely, the Day of the Week for any date.


To calculate the volume of a container in gallons, you will usually need to do so by converting the volume from another unit of measurement. You can calculate gallons from any other unit of measurement used to describe volume.


The British Thermal Unit (BTU) is the basic measure of heat energy in the Imperial system. One BTU is defined as the amount of heat necessary to raise 1 pound (0.454 kg) of water 1 degree Fahrenheit (0.55 degrees Celsius).


The Kelvin scale is a thermodynamic temperature scale where zero defines the point at which molecules give off no heat and all thermal motion ceases.


The correlation coefficient, denoted as r or ρ, is the measure of linear correlation (the relationship, in terms of both strength and direction) between two variables.


This wikiHow will teach you how to find the average of a group of numbers.


A histogram is a graph that shows the frequency, or the number of times, something happens within a specific interval. A histogram is similar to a bar chart; however, the area represented by the histogram is used to graph the number of times a group of numbers appears.


This wikiHow teaches you how to generate a random selection from pre-existing data in Microsoft Excel. Random selections are useful for creating fair, non-biased samples of your data collection.


Finding how much something has increased or decreased allows you to create a useful statistic for scholarly papers, articles or business meetings. You will need to gather your data and then plug it into a formula to figure out the percentage increase within a given period of time.


Factorials are commonly used when calculating probability and permutations, or possible orders of events.  [1]   A factorial is denoted by a        !


Pie charts, also called circle charts, are composed of a circle divided into different wedges or sections. You can draw a pie chart using programs like   Adobe Illustrator  or   Microsoft Excel .


Finding a fraction of an amount is a useful skill you need for everyday, real-world math problems. For example, to find a discount price, or to determine a portion of something that you have (or a what portion you are missing), you need to know how to find the fraction of an amount.


When you're writing a research paper, particularly in social sciences such as political science or sociology, statistics can help you back up your conclusions with solid data.


Comparing two proportions is often necessary to see if they are significantly different from each other. For example, suppose you do a randomized control study on 40 people, half assigned to a treatment and other half assigned to a placebo.


A weighted average is a more accurate measurement of scores or investments that are of relative importance to each other. This is often the case with investment portfolios, grade scoring and other statistics.


For many people, fractions are the first big stumbling block in math. The concept of fractions is a difficult one, and it doesn't help that you must learn special terms to describe them.


A fraction is a way to describe a part of a whole.  [1]   If you have a whole pizza and your friend eats half of it, they will have eaten part of the whole pizza.


Integers are whole numbers without fractional or decimal components. If a math problem requires you to sum a certain number of integers from 1 to a given value N, it's not necessary to add each and every value by hand.


Subtraction is simply taking one number away from the other. It's pretty straightforward when you're subtracting one whole number from another, but subtraction can get a bit more complicated when you're working with fractions or decimals.


Subtracting binary numbers is a bit different than subtracting decimal numbers, but by following the steps below, it can be just as easy or even easier.


A mixed number is a whole number next to a fraction, such as 5 ½, and can be difficult to add.


Adding large numbers (that is, multiple digit numbers) follows the same organizational principles as adding single digits. All numerical addition relies on the understanding that the sum does not change depending on the order in which the numbers are added, nor is the value of any number affected by breaking it into its component parts.


You can perform all the usual mathematical operations on  square roots , including addition,  subtraction ,  division  and  multiplication . But because the radical sign over the square root represents a mathematical operation already in place, the rules for adding square roots are a little different than the rules you may be used to with integers.


Add Numbers (Using the Count to 99 on Your Fingers Method)

After learning how to use the  Chisanbop method for counting to 99 on your fingers , the next step is to learn how to add using this method. If you do not already know how to count to 99 on your fingers, please go to the  wikihow article for the method  to learn.


Integers are positive or negative whole numbers without a decimal or fractional component. Multiplying and dividing two or more integers is not very different from  multiplying  and  dividing  basic whole numbers.


Master Multiplication without Learning the Tables

Multiplication is learned when you commit to memory a pair of digits (the factors) and its result (the product). Kids can learn these pairs quickly through drills and games, on their own or with others.


Multiplication is one of the basic mathematical operations that children need to learn. A multiplication table can be really useful in helping children master multiplication, and even enjoy it.


Multiplication is an important skill you will have to use in everyday life. There are many ways to improve multiplication skills. Through memorizing basic multiplication tables to knowing trick to multiply bigger values, with a little practice you can improve your skills.


Learn the 9's on the Multiplication Table

The nine times tables can be a little tricky to master but there are some good ways to overcome this and remember them with ease. This article presents various ways to learn and make use of the nine times tables without a hitch.


Master Multiplication Through Drills and Games

Making mathematics enjoyable is a great way to keep learners enthused and to avoid the frustrations of finding it hard or boring. In this tutorial, you'll discover a fun way to get children and other learners to enjoy the process of mastering multiplication, all through the use of drills and games.


Learning multiplication facts is an essential part of childhood math. It takes time to learn them, but with a few tips and tricks, you can conquer them with practice.


Find the Greatest Common Divisor of Two Integers

The Greatest Common Divisor (GCD) of two whole numbers, also called the Greatest Common Factor (GCF) and the Highest Common Factor (HCF), is the largest whole number that's a divisor (factor) of both of them.


Multiplication charts and tables are tools used to help you memorize multiplication facts. There are two types of charts you will often see. A times table is a table that just has a series of numbers.


Find a Divisibility Rule for Composite Integers

You may come across a problem in which you need to know whether a large number is divisible by a composite integer (a non-prime number). You can easily solve this problem using a calculator; however, you can also create certain rules that will let you test whether any number is divisible by a certain composite integer.


Prime factorization breaks a number down into its simplest building blocks. If you hate working with large numbers like 5,733, learn how to turn it into 3 x 3 x 7 x 7 x 13 instead.


Finding the fraction of a number is the same as multiplying the number and the fraction. This simple method can be used for any kind of number (percent, fraction, mixed number, decimal), but is easiest with whole numbers.


Vedic Math can be used to multiply large numbers in a matter of seconds without using a calculator! Here are some quick examples of how you can use this technique.


Calculus is a branch of mathematics focused on limits, functions, derivatives, integrals, and infinite series. This subject constitutes a major part of mathematics, and underpins many of the equations that describe physics and mechanics.


24 is a fun game that is easy if you know how to add, subtract, multiply, and divide. It just take brains that twist and turn around each step of the problem.


The derivative is an operator that finds the instantaneous rate of change of a quantity. Derivatives can be used to obtain useful characteristics about a function, such as its extrema and roots.


You will learn how to rotate forms about the axes or Origin Point at {0, 0} in the Cartesian Plane. This is a very useful tool to add to your portfolio of tools and is accomplished by multiplying the original {X, Y} coordinates by cos(t)*X + sin(t)*Y and -sin(t)*X + cos(t)*Y to create the new {x, y} coordinates.


To subtract a percent from a percent, simply ignore the percent sign and subtract the numbers as if they were whole numbers. The result will be a difference in percentage points.


If you are involved in the observation of statistics or looking at any kind of technical data, you may need to be able to read a histogram. A histogram is a specific visual representation of data, usually a graph using bars without spaces to represent the number of incidents in a distinct group or sample set.


Mixture word problems involve creating a mixture from two ingredients. A common type of problem is creating a solution of a certain strength, such as a 20% saline solution, from two solutions of varying strengths.


This article is intended for those who have trouble solving math-related word problems. In the following steps, this example is used: If Sally has fifteen marshmallows, Tommy has seven, and Henry has one-third as many as Sally, how many marshmallows does Henry have?


The abacus (the suanpan is the most useful variety) is a deceptively simple calculating tool still used all over the world. It's a useful learning device for the visually impaired, as well as for anyone who wants to learn the roots of the modern calculator.


There are several numerical formats that share the label of “standard form.” The method used for writing numbers in standard form will vary depending on the type of standard form you're referring to.


Use a Shopping Catalogue for Learning in 30 Ways

Shopping catalogues are a cool math resource when relief teaching as they form the basis of some quick math thinking. Kids love them and they are so handy.


Using words to write short numbers makes your writing look clean and classy. In handwriting, words are easy to read and hard to mistake for each other.


The aim of a well-written case study in Mathematics is to provide guides and teachers with important information on any number of situations that are problematic.


If you have a big set of numbers you need to calculate the mean for, it can become a tedious task. In this case, a program can calculate mean easily.


Work With Percentages of Increase and Decrease

Perhaps you're trying to answer a question like "If a blouse that originally cost $45 is on sale at 20% off, what is the new price?" These types of questions are called  percentage increase/decrease  questions, and they're a fairly basic staple of math.


There are certain rules to be followed when writing the units of measurement in the SI (Système international d'unités) system which is often called the metric system in the United States.


Use the Newton Raphson Method Without Calculus

The Newton-Raphson method is a method used to approximate the zeroes of a function. The iterative processed formula requires calculus but by hand can be done manually.


The first thing to understand is that there are  two major categories  of percentage problems:  straight comparison questions  (such as, "35 is 5% of what number?")


Use the Newton Raphson Method of Quickly Finding Roots

Isaac Newton and Joseph Raphson came up with a very fast method for finding roots. However, it does not always converge, especially if the root is less than .5 as I understand it, nor if the initial guess is not close enough.


Roman numerals are numbers in a system. Surely everyone knows that I is 1, II is 2, and III is 3, but do they know that V is 5, or that X is 10? If you don't know that and the numbers that follow, and would like to know, read on!


Use Distributive Property to Solve an Equation

The distributive property is a rule in mathematics to help simplify an equation with parentheses. You learned early that you perform the operations inside parentheses first, but with algebraic expressions, that isn’t always possible.


A set of real numbers, S, is considered “bounded” if it is finite, containing a number greater or equal to all the other numbers in the set and a number less than or equal to all the other numbers in the set.


To someone who doesn't know how to use it, a slide rule looks like a ruler designed by Picasso. There are at least three different scales, and on most of them the numbers aren't even spaced evenly apart.


The "path of minimum weight" algorithm.  [1]   It works in the same way as a route planner for your car, helping you to find the route of least distance, shortest time or in fact any "minimum" for your journey.


Art and math do not just produce static results but rather provide part of the dynamic interface of culture. For one article to attempt how to use art to teach math is just mind boggling!


Use C++ to Write Cin and Cout Statements

C++ is a very in depth language and can be used for very complex operations, but as with learning any new skill, it is necessary to first learn the fundamentals.


A number line is a line drawing where numbers are written from smallest to largest. A number line can be a tool to do simple math problems. This is most helpful for doing problems with small numbers.


Knowing how to calculate the probability of an event or events happening can be a valuable skill when making decisions, whether playing a game or in real life.


Hexadecimal notation (base sixteen) is used throughout the Web and computer systems to indicate values. One good example is the notation for color in HTML pages.


The Fibonacci Sequence is the sequence of numbers that appear in the Fibonacci Spiral. Everything in nature has to have at least one Fibonacci Number, but the sequence is a little complected, so read on to understand it!


So, we counted our fingers since we were little, so if you have, you've probably counted ten fingers on your hand. On one finger, I can count to 4,225, on two finger 8,450 on three, we double it for a product of 16,900.


Matrix transposes are a neat tool for understanding the structure of matrices. Features you might already know about matrices, such as squareness and symmetry, affect the transposition results in obvious ways.


You're sure you have a theory for just about everything perhaps. There's a right way and a wrong way to go about theorizing and testing your theories on solving actual problems.


One way to classify functions is as either “even,” “odd,” or neither. These terms refer to the repetition or symmetry of the function. The best way to tell is to manipulate the function algebraically.


Speed Up Numeric Calculations in Mathematics

The article shows you some mathematical tricks which will help you to speed up your calculations without using a calculator. The important thing in this approach is recognizing patterns.


A ratio is a way of expressing the relative sizes of parts of a group.  [1]   Ratios are used often in baking, science, and and any time you want to compare or exchange amounts of something.


There are many fabulous methods to teach prime numbers. This hands-on method will get your students engaged and thinking as they explore the concept.


Subtracting fractions from whole numbers isn't as hard as it looks. There are two main ways to go about it: you can either convert the whole number into a fraction, or subtract 1 from that whole number and convert the 1 into a fraction with the same base as the fraction you're subtracting from it.


Solve Simultaneous Equations Using Elimination Method

Have you ever had a simultaneous problem equation you needed to solve? When you use the elimination method, you can achieve a desired result in a very short time.


A matrix is a very useful way of representing numbers in a block format, which you can then use to solve a system of linear equations. If you only have two variables, you will probably use a different method.


Solve Word Problems Requiring Quadratic Equations

Some word problems require quadratic equations in order to be solved. In this article, you will learn how to solve those types of problems.  Once you get the hang of it, it will be very easy.


Solve aB=a^B in Neutral Operations Using Algebra

This article shows how to solve a*b=a^b, which is a Neutral Operation since the operators are being held neutral to one another using the same variable values for a and b. Simple algebra will be used.


Calculators, computers, and other electronics have changed the way educators teach mathematics. Unfortunately, our reliance on technological aids has caused many of the mental math skills taught previously to fall by the wayside.


As your math skills advance, you will begin to encounter longer and longer word problems. Often these problems contain extraneous information that is not needed in order to solve the problem.


An equation is a mathematical sentence that expresses two equal values.  [1]   In algebra you will often work with equations, which have an unknown value represented by a variable.


Solve a+b+c+d=abcd=e in Neutral Operations

This is a problem in Neutral Operations Theory, where addition is being neutralized versus multiplication. The problem is to find a+b+c+d = a*b*c*d = e. This article will guide you to the solution, step by step, showing you how it is done, to an accuracy of 14 decimal places.


Combined labor problems, or work problems, are math problems involving rational equations.  [1]   These are equations that involve at least one fraction.


Math students are often asked to give their answer in "simplest terms"—in other words, to write answers as elegantly as possible. Though a long, ungainly expression and a short, elegant one may technically equal the same thing, often, a math problem isn't considered "done" until the answer has been reduced to simplest terms.


Solve a Difficult Neu Ops Problem by Goal Seeking in Excel

Learn how to solve a*b*c*...*i = a^(b*c*...*i) via goal seeking and Neutral Operations ("Neu Ops") in Excel. The algebra is wicked, but the solution falls easily to goal seeking.


Solve a Medium Difficulty Neutral Operations Problem with Excel

The problem is: a+b+c+...+x+y+z = abc...xyz; i.e. the sum of 26 numbers must equal their product. Learn to solve this medium difficulty problem via goal seeking and an algorithmic approach.


Simplifying a ratio makes it easier to work with, and the simplifying process is fairly straightforward. Find the greatest common factor between both sides of the ratio and divide the entire expression by that quantity.


Many situations will call for you to round decimals to the nearest tenth to make the number easier to work with. Once you understand how to find the tenths and hundredths place, the process is very similar to rounding whole numbers.


Euclid, in his book, "Elements", gave us the proportion for Phi as a is to b as b is to a+b, i.e. a/b=b/(a+b). This article will step through the process of obtaining the quadratic roots of this relation, i.e. that {Phi1, Phi2} = (±1 ± sqrt(5)) / 2, the Golden Ratio for both b=1 and b=-1.


Read Someone's Mind With Math (Math Trick)

Mathematics are governed by a fixed set of principles. If you follow the same process, you'll get the same answer every time. Using math in magic tricks, however, is just as much an art as it is science.


Absolute value is an expression of a number’s distance from 0. It is denoted by two vertical bars on either side of a number, variable, or expression.


Rounding off numbers creates numbers with fewer digits (most of the time). Although rounded numbers are less precise than non-rounded numbers, they are preferred in many circumstances.


Reading the number MMDCCLXVII would have been no problem for someone in ancient Rome or for the many people in medieval Europe who continued to use the Roman system.


No mathematician likes working with a long, awkward string of decimals, so they will often use a technique called "rounding" (or sometimes "estimating") to make these numbers easier to work with.


Most people are familiar with reading numbers on a number line or reading data from a graph. However, under certain circumstances, a standard scale may not be useful.


Prepare for a Mathematical Test on Constructions

Mathematics is a subject of practice, patience, and perfection. Those who master these three elements of maths, maths becomes very easy for them. But those who don't, maths becomes a torture for them.


You're learning your single digit multiplications, but for some reason you keep getting stuck on that last tricky number: 9. Read on to learn how to tackle those single digits and leave everyone else in your dust!


Maths Warrior a is a 2-player math dice game which can be played to help improve children's skills in addition, subtraction, multiplication, and division.


Coolmath offers many interesting and popular games, including the Papa's Bakeria series, Fireboy and Watergirl, Run, Jelly Truck, and more. Coolmath also offers many education games.


In calculus, a useful technique for integrating is u-substitution. Changing variables allows us to obtain an integral that is easier to evaluate.


This article is meant to inform new MATLAB users how to plot an anonymous function. This method requires little experience in programming, so dive in with step one to get started.


A partial derivative of a multivariable function is the rate of change of a variable while holding the other variables constant. For a function        z  =  f  (  x  ,  y  )  ,    {\displaystyle z=f(x,y),}       we can take the partial derivative with respect to either        x    {\displaystyle x}       or        y  .


Show That a Vector Field Is Conservative

In calculus, conservative vector fields have a number of important properties that greatly simplify calculations, including path-independence, irrotationality, and the ability to model phenomena in real life, such as Newtonian gravity and electrostatic fields.


The Gamma function is a special function that extends the factorial function into the real and complex plane. It is widely encountered in physics and engineering, partially because of its use in integration.


Partially Differentiate a Polynomial With the Chain Rule

Instead of differentiating a function with respect to time, you can differentiate with respect to any other variable. Instead of seeing how much a variable changes over time, you will see how much a variable changes over changes in “z” or “p” or even “b!”


Integrate Using Expansions of the Gamma Function

The main article on  integrating using the Gamma function  talks about how the Gamma function is used to evaluate simple integrals. When we include the logarithmic function and its powers, we cannot directly use the Gamma function anymore.


Write a Congruent Triangles Geometry Proof

Congruent triangles are triangles that are identical to each other, having three equal sides and three equal angles.  [1]   Writing a proof to prove that two triangles are congruent is an essential skill in geometry.


A protractor is a handy tool used to measure and draw angles. Generally, semi-circular in shape, protractors are also available in full-circle, 360-degree versions.


Use Random Cut Theorem and Simple Probability

In Euclid's "Elements" are several versions of the Random Cut Theorem; in this article, you will see one of the simpler ones (Book II Proposition 4) to make a point about simple probability you can use.


The circumference of a circle is the distance around its edge. If a circle has a circumference of 2 miles (3.2 kilometers), you would have to walk 2 miles (3.2 km) around the circle before you came back to the place you started.


Integrate Using the Riemann Zeta Function

The Riemann zeta function is one of the most important functions in mathematics. It was first introduced by Euler and its properties were further explored in Riemann's 1859 paper, leading to the famed Riemann hypothesis concerning the distribution of prime numbers.


The  Pythagorean Theorem  allows you to work out the length of the third side of a right triangle when the other two are known. It is named after Pythagoras, a mathematician in ancient Greece.


Pythagoras’s Theorem is a formula you can use to find an unknown side length of a right triangle. It is one of the most basic geometric tools in mathematics.


Octal is the base 8 number system, that only uses the digits 0 through 7. Its main advantage is the ease of conversion with binary (base 2), since each digit in octal can be written as a unique three-digit binary number.


Euclidean geometry is all about shapes, lines, and angles and how they interact with each other. There is a lot of work that must be done in the beginning to learn the language of geometry.


Convert Between Fahrenheit, Celsius, and Kelvin

You can convert degrees Fahrenheit to degrees Celsius or vice versa by using simple addition, subtraction, multiplication, and division. Next time you’re given the temperature in the wrong scale, you’ll be able to convert it in just a matter of seconds!


A rotation is a type of geometrical transformation in which the vertices of a shape are rotated at a certain angle around a fixed point (called the center of rotation).


Understand the Beautiful Crossing Chords Theorem of Euclid

When one first reads the Proposition 35 of Book III of Euclid's "Elements", one may be astounded that crossing chords create two equal rectangles, whether their intersection point is in the center or not, but it is fairly easy to understand.


Prove the Obtuse Rule, Book II Prop. 12 of Elements

BOOK II PROP. XII.—Theorem. In an obtuse-angled triangle (ABC), the square on the side (AB) subtending the obtuse angle exceeds the sum of the squares on the sides (BC,CA) containing the obtuse angle, by twice the rectangle contained by either of them (BC), and its continuation (CD) to meet a perpendicular (AD) on it from the opposite angle.


Calculate the Standard Error of Estimate

The standard error of estimate is used to determine how well a straight line can describe values of a data set. When you have a collection of data from some measurement, experiment, survey or other source, you can create a line of regression to estimate additional data.


Quartiles are numbers used to divide a set of data into four equal parts, or quarters.  [1]   The upper quartile, or third quartile, is the top 25% of numbers in the data set, or the 75th percentile.


Calculate the Sum of Squares for Error (SSE)

The sum of squared errors, or SSE, is a preliminary statistical calculation that leads to other data values. When you have a set of data values, it is useful to be able to find how closely related those values are.


In mathematics, the "mean" is a kind of average found by dividing the sum of a set of numbers by the count of numbers in the set. While it isn't the only kind of average, the mean is the one most people think of when speaking about an average.


The decimal (base ten) numeral system has ten possible values (0,1,2,3,4,5,6,7,8, or 9) for each place-value. In contrast, the binary (base two) numeral system has two possible values represented as 0 or 1 for each place-value.


The harmonic mean is a way to calculate the mean, or average, of a set of numbers. Using the harmonic mean is most appropriate when the set of numbers contains outliers that might skew the result.


“Unit rate” is a comparison of any two separate but related measurements when the second of these measurements is reduced to a value of one. Calculating the unit rate in any set of circumstances will require the use of division.


Geometric mean is a mathematical concept that is related to, but easily confused with, the more commonly used arithmetic mean. To calculate the geometric mean, use one of the methods below.


The standard deviation calculation tells you how spread out the numbers are in your sample.  [1]   This wikiHow will show you how to find the mean, variance, and standard deviation.


P value  is a statistical measure that helps scientists determine whether or not their hypotheses are correct. P values are used to determine whether the results of their experiment are within the normal range of values for the events being observed.


“Standard error” refers to the standard deviation of the sampling distribution of a statistic. In other words, it can be used to measure the accuracy of a sample mean.


Calculate the Expected Value of Sample Information (EVSI)

If you are doing a statistics problem, the question may ask you to find the expected value of sample information (EVSI). This question can also worded to ask what the maximum price you should pay for the information should be.


Scientific studies often rely on surveys distributed among a sample of some total population. Your sample will need to include a certain number of people, however, if you want it to accurately reflect the conditions of the overall population it's meant to represent.


In statistics,  range  represents the difference between the highest value of a data set and the lowest value of a data set. The range shows how spread out the values in a series are.


Absolute frequency is a simple concept to grasp: it refers to the number of times a particular value appears in a specific data set (a collection of objects or values).


Calculating percentage error allows you to compare an estimate to an exact value. The percentage error gives you the difference between the approximate and exact values as a percentage of the exact value and can help you see how close your guess or estimate was to a real value.


Learning how to type fractions is a useful skill that can be applied to numerous types of people. Teachers and students can use the skill for homework assignments or research papers as well as in chemistry and geometry.


Math problems will often ask you to reduce proper fractions (a fraction with a larger denominator than numerator) to their simplest form. Sometimes you may waste time trying to simplify fractions that cannot be further reduced.


Subtracting mixed numbers can be tricky, but you can do it in just a few easy steps if you follow a few basic rules. If you want to know how, just read on.


Subtracting fractions with like denominators is easy, but when the fractions have unlike denominators, it can take a few steps to make them have the same denominator so that you can subtract them.


Fractions are simply smaller parts of a whole number. The most common way to imagine fractions is with a simple pizza. Say you have one pizza cut into eight equal slices.


Problems with negative numbers may look difficult, but there's still only one right answer and with practice you can learn to find it quickly. There are at least two ways you can think your way through these problems.


Adding decimals is almost exactly like adding integers. All you have to do is line up the decimal points, and make sure to write the decimal point in your number as well.


Turn an Improper Fraction Into a Mixed Number

An improper fraction is a fraction with a larger "top" than "bottom," like  5 / 2 . Mixed numbers are a whole number and a fraction together, like 2 1 / 2 .


Your earliest introduction to fractions was probably in the form of a pie chart. The numerator, or top number in the fraction, tells you how many pieces you have, and the denominator tells you how many pieces it takes to make a whole pie.


Add and Subtract Fractions With Unlike Denominators

In order to add and subtract fractions with unlike denominators, you have to convert them into fractions with like denominators and corresponding numerators.


Adding and subtracting fractions is an essential skill to have. Fractions show up in daily life all the time, especially in math classes, from elementary school through college.


Short division is similar to long division, but it involves less written work and more mental arithmetic. The general method for both short and long division is the same, but in short division, you write down less of your work, doing the simple subtraction and multiplication mentally.


You can add and multiply decimals just as you add and multiply whole numbers. The easiest way to perform these operations is to use the standard vertical algorithms you use to add or multiply any numbers together.


Add a Sequence of Consecutive Odd Numbers

You can add a series of consecutive odd numbers manually, but there is a much easier way to do it, especially if you are dealing with a lot of numbers.


Add a Consecutive Series of Numbers in Your Head

The ability to quickly add a long string of consecutive numbers in your head is a real party show-stopper! Imagine being at a party, and being able to quickly and accurately add all the numbers from 1 to 50, or 1 to 100, for example.


A number's  factors  are numbers which multiply together to form it as a product. Another way of thinking of this is that every number is the product of multiple factors.


Don't be intimidated by double digit multiplication. As long as you know how to do basic  single-digit multiplication , you're already on your way. Really, all you have to do is multiply the digits in the first number by the ones digit of the second number, then multiply the digits in the first number by the tenths digit of the second number, and then add up the two products.


Easily Solve Math Problems Using Difference of Squares

Multiplying two- or three-digit numbers using the standard algorithm requires a pen and pencil and can take some time. By using the difference of squares formula, a standard formula used in basic algebra, multiplying large numbers becomes easier and quicker to do, and can often be done in your head.


Long multiplication can seem very intimidating, especially if you're multiplying two numbers that are pretty large. If you take it step by step, though, you'll be able to do long multiplication in no time.


If you face yourself having to do multiplication without a calculator, multiplying long strings of numbers can seem like a daunting task. Multiplication of more than three digits can be tiresome, complex, and error-prone.


There are a variety of ways to do division. You can divide decimals, fractions, or even exponents, and you can do long division or short division. If you want to know how to divide using several methods, just follow these steps.


Odd number are numbers that are not a multiple of 2, such as 3, 5, 7, and 9. Since you can’t evenly divide an odd number in half, making such a calculation can be tricky.


Dividing square roots is essentially simplifying a fraction. Of course, the presence of square roots makes the process a little more complicated, but certain rules allow us to work with fractions in a relatively simple way.


When first encountered, the integral of the natural logarithm        ∫   ln     x    d    x    {\displaystyle \int \ln x{\mathrm {d} }x}       may seem intimidating, but it is actually a simple application of  integration by parts.


This article will tell you how to do the British Method for division. It is taught in some US schools in fourth grade to prepare you for fifth grade long division.


Integration in cylindrical coordinates        (  r  ,  θ   ,  z  )    {\displaystyle (r,\theta ,z)}       is a simple extension of polar coordinates from two to three dimensions.


The cardinal sine function, also known as the  sinc function,  is the function


Integration in spherical coordinates is typically done when we are dealing with spheres or spherical objects. A massive advantage in this coordinate system is the almost complete lack of dependency amongst the variables, which allows for easy factoring in most cases.


Integrate by Parts when One Function Is a Polynomial

Integration by parts is a technique used to integrate a product of two functions. The formula is


Limits in single-variable calculus are fairly easy to evaluate. The reason why this is the case is because a limit can only be approached from two directions.


Integrate by Differentiating Under the Integral

Differentiating under the integral, otherwise known as "Feynman's famous trick," is a technique of integration that can be immensely useful to doing integrals where elementary techniques fail, or which can only be done using  residue theory .


When you encounter a function nested within another function, you cannot integrate as you normally would. In that case, you must use u-substitution.


Find the Volume of a Washer Using Calculus

In this article, you will learn to rotate a region formed by two curves around an axis, and to calculate the volume made by the new 3-dimensional shape through the use of calculus.


Elliptic integrals are special functions that arise in many areas of mathematics and physics. In general, these functions cannot be written in terms of elementary functions.


Before computers and calculators, logarithms were quickly calculated using logarithmic tables. These tables can still be useful for quickly calculating logarithms or multiplying large numbers, once you figure out how to use them.


Exponents are used when a number is multiplied by itself. Instead of writing out        4  ∗   4  ∗   4  ∗   4  ∗   4    {\displaystyle 4*4*4*4*4}      , however, you can simply write out         4   5      {\displaystyle 4^{5}}      .


Logarithms might be intimidating, but solving a logarithm is much simpler once you realize that logarithms are just another way to write out exponential equations.


Exponential equations may look intimidating, but solving them requires only basic algebra skills. Equations with exponents that have the same base can be solved quickly.


Calculating exponents is a basic skill students learn in pre-algebra. Usually you see exponents as whole numbers, and sometimes you see them as fractions.


In algebra, the operations (adding, subtracting, multiplying, and dividing) performed on variables work the same as the operations performed on numbers.


Simplifying a square root isn't as hard as it looks. To simplify a square root, you just have to factor the number and pull the roots of any perfect squares you find out of the radical sign.


A complex number is a number that combines a real portion with an imaginary portion. Imaginary is the term used for the square root of a negative number, specifically using the notation        i  =    −   1      {\displaystyle i={\sqrt {-1}}}      .


Exponents are a way to identify numbers that are being multiplied by themselves. They are often called  powers . You will come across exponents frequently in algebra, so it is helpful to know how to work with these types of expressions.


Prove the Intersecting Chords Theorem of Euclid

When one first reads the Proposition 35 of Book III of Euclid's "Elements", one may be astounded that crossing chords create two equal rectangles, whether their intersection point is in the center or not, but it is fairly easy to understand.


Prove the Angle Sum Property of a Triangle

It is common knowledge that the sum of all the interior angles of a triangle equals 180°, but how do we know that? To prove that the sum of all angles of a triangle is 180 degrees, you need to understand some common geometric theorems.


The inch is a standard unit of length in the imperial measurement system. You would usually measure inches using a measuring stick or measuring tape, but there are also ways to determine the number of inches using estimates and conversions.


Prove the Acute Rule, Book II Prop. 13 of Elements

PROP. XIII.—Theorem. In any triangle (ABC), the square on any side subtending an acute angle (C) is less than the sum of the squares on the sides containing that angle, by twice the rectangle (BC,CD) contained by either of them (BC) and the intercept (CD) between the acute angle and the foot of the perpendicular on it from the opposite angle.


Place a Line Equal to a Given Line at an Extreme Point

Euclid, in his famous 13 book treatise on Geometry, "Elements", gives in Book I Proposition 2, the Solution and Demonstration of how "From a given point (A) to draw a right line equal to a given finite right line (BC)".


Similar triangles are two triangles that have the same angles and corresponding sides that have equal proportions.  [1]   Proving similar triangles refers to a geometric process by which you provide evidence to determine that two triangles have enough in common to be considered similar.


Angles are named in two ways. You can name a specific angle by using the vertex point, and a point on each of the angle’s rays. The name of the angle is simply the three letters representing those points, with the vertex point listed in the middle.


Measuring your reach, or arm span, is as simple as measuring the length between your fingertips, with your arms outstretched. Extra reach is useful in activities such as rock climbing, boxing, swimming and basketball.


Using a protractor can be tricky, especially if you are using one with two sets of numbers. If you understand the concept of acute and obtuse angles, however, learning how to use a protractor is easy.


The magic circle, or Mobius strip, named after a German mathematician, is a loop with only one surface and no boundaries.  [1]   A Mobius strip can come in any shape and size.


In statistics, an  outlier  is a data point that significantly differs from the other data points in a sample. Often, outliers in a data set can alert statisticians to experimental abnormalities or errors in the measurements taken, which may cause them to omit the outliers from the data set.


Microsoft Excel includes a number of statistical functions, including the ability to figure the mean, median and mode of a data sample. While mean, the average of a group of numbers, and median, the midpoint number of a data group, are used more often, mode, the most frequently appearing number in a data group, can be useful as well, such as using the most frequent numeric grade score to provide feedback on the effectiveness of a teaching method.


The mathematical concept of  odds  is related to, yet distinct from the concept of  probability.  In simplest terms, odds are a way of expressing the relationship between the number of favorable outcomes in a given situation versus the number of unfavorable outcomes.


Do you have two  percentages  that you wish to multiply together, or divide? Multiplying and dividing percents is different from adding or subtracting them.


Lots of people think that if you roll three six sided dice, you have an equal chance of rolling a three as you have rolling a ten. This is not the case, however, and this article will show you how to calculate the mean and standard deviation of a dice pool.


Multiply and Divide Geometrically Like Mother Nature

This method of multiplication and division was used by Descartes and is from Euclid's "Elements", Book VI, Proposition 12. It is based on similar triangles.


Modify a Brief Linear Regression Model in Excel

In the article  How to Create a Brief Linear Regression Model in Excel , what was not shown was how to include an ellipse surrounding the data, i.e. create a fair data boundary, which problem has now been solved.


You can order decimals just as you can order other numbers. With decimals, it is especially important to understand place value. You can use a place value chart to compare the value of comparable digits in each number, or you can use a number line and assess each number’s relative position.


Have you ever stayed up all night just to try to memorize formulas for your Maths? Or do you memorize a set of formulas today and forget all about them tomorrow?


Pi  is the ratio of the circumference to the diameter (the diameter is 2 times the radius) of a circle. Computing pi is a common way to judge the computing power of supercomputers, and mathematicians now know approximately 10 trillion digits of pi.


To measure millimeters, you would typically use a metric ruler or meter stick. If you do not have a measuring stick, though, there are also ways to estimate the number of millimeters.


Parallelism is a measurement of whether two surfaces of an object are parallel to each other, or whether two lines are parallel. Parallel simply means that the distances between the two surfaces or two lines are constant.


Mentally Calculate Primality of Any Three Digit Number

Prime numbers , once considered a mathematical novelty, have entered prime time with the advent of the Internet and modern encryption techniques. While  deciding if a 1024-digit prime number may be computationally difficult , you yourself, with a little bit of practice, can determine the primality of any 3-digit number in your head!


Measuring length is a basic skill necessary for a variety of tasks, from simple arts-and-crafts projects to household renovations. Choose the most appropriate measuring tool and know which unit of measurement you intend to find before measuring the length of any object.


Make Multiple of Singly Even Magic Squares by a Simple Method

Singly even order Magic Squares are those which are divisible by 2 but not by 4. The earliest square would be 6x6 order square, then we have 10x10, 14x14, 18x18 etc.


Fraction questions can look tricky at first, but they become easier with practice and know-how. Once you understand the fundamentals of what fractions are, you'll be breezing through fraction problems like a knife through butter.


Complex fractions are fractions in which either the numerator, denominator, or both contain fractions themselves. For this reason, complex fractions are sometimes referred to as "stacked fractions".


Fractions are numbers that represent parts of whole numbers. If a fraction has a numerator greater than its denominator it is termed an “improper fraction” and can be simplified as a mixed number (a number that combines a whole number and a fraction).