Math Knowing Search Results

How To: Multiply simple fractions

Watch this video to learn how to multiply fractions by fractions. First multiply the top numbers together. For example, if you have 3/5 * 4/7, multiply 3 * 4 and put your product on top of the fraction you will get as a product. Next, multiply the bottom numbers together and put them on the bottom of your resulting fraction. Next see if you can reduce your product to simplify it. You could also do the reducing step first by canceling out any common factors in the numerators and denominators o...

How To: Graph a line in slope-intercept form

Graphing a line in slope-intercept form is easy in simple after watching this video. In this math tutorial, you'll be guided step-by-step how to graph a line from an equation in the y=mx+b format. The steps include determining the slope and the y-intercept, plotting the y-intercept on the graph, and finally applying the slope to connect the points. The video guides you through the entire process by illustrating and demonstrating all the necessary steps, thus making graphing a snap.

How To: Add 3 fractions with common denominators

In this math tutorial the instructor shows us how to add three fractions with common denominators. He says that it is similar to adding two fractions with common denominator. He tells us first to add all the numbers in the numerator which gives us a new number which is the numerator in our answer and the denominator to our answer is the original common denominator. Now, if the resulting fraction is improper fraction, you will have to convert it into a mixed number. In this video the author sh...

How To: Use the Complex Trinomial factoring method

A video from free math tutoring that teaches you a method of factorization of a complex polynomial. The tutor shown in the video demonstrates how to factorize common functions of a variable by the factor method. This video isn't for advanced learners of mathematics. It is for beginner to intermediate level viewers.

How To: Evaluate fractions containing variables

This video is a great one on learning about evaluating fractions. The voice explains how to first plug in the numbers given for each variable in the fractions. He also explains the importance of simplifying the top and bottom first before simplifying the entire fraction. He also explains ways that would not be helpful in solving the problem and comparing that with the correct way. Then he notes the use of your simple math rules to find the answer. Excellent video for viewers.

How To: Convert decimals to percents in math

This video is about the mathematical calculation to convert decimal to percentages. In this video, step by step calculations are shown. Let us take an example of a number; say 0.345, and we want to convert this decimal number to a percentage. Then we have to shift the decimal to two places to right side. We then get the answer in percentage but don't forget to put the sign at last. This video has made it easier for me to make my children understand about the decimals and percentages.

How To: Deal with brackets in polynomials

This how-to video shows viewers how to solve math problems with brackets in polynomials. The person in the video teaches people how to solve the problem with a positive sign before the brackets. This segment does not show how to solve the trickier problem where there is a negative sign in front of the brackets. The tutor shows everything from removing the bracket due to the positive sign, to combining the similar terms for the result of the problem. This video can help anybody deal with brack...

How To: Convert to a higher equivalent fraction

A representative from Math Problem Generator explains in this video that converting a simple fraction from its current state to a higher equivalent can be very simple. He explains the process neatly and provides a great example. To convert a fraction, you must multiply the numerator and the denominator by the exact same number. The example he shows is captured from the screen of a computer and is written out in some sort of a painting program. The example shows that four-ninths equals eight-e...

How To: Remember "greater than" & "less than" symbols

This video shows you how to easily remember "greater than" and "less than" math symbols. The first thing you have to remember is that "less than" symbol looks like the letter L ("less than" symbol is "<"). When you see this sign, remember that < looks like L and means "less than". The other symbol, "greater than" does not look like the letter L, therefore it cannot be "less than" and it's easier to remember. The "greater than" symbol is ">". That's it! Good Luck!

How To: Calculate return on equity, assets and profitability in Microsoft Excel

As you might guess, one of the domains in which Microsoft Excel really excels is finance math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 19th installment in his "Excel Finance Class" series of free video lessons, you'll learn how to calculate return on equity, assets, and profitablility — return on investment (RoI).

How To: Create common-sized financial statements in Microsoft Excel

As you might guess, one of the domains in which Microsoft Excel really excels is finance math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 15th installment in his "Excel Finance Class" series of free video lessons, you'll learn how to generate a common-sized financial statement within Microsoft Excel.

How To: Solve word problems that involve rounding to estimate differences

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to unpack and solve problems that require you to estimate differences by rounding.

How To: Interpret inequalities in basic algebra

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to interpret simple inequality problems in basic algebra.

How To: Solve an inequality word problem in algebra

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to unpack and find the answer to a basic inequality word problem.

How To: Solve an inequality problem in basic algebra

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve a simple inequality problem.

How To: Solve word problems involving direct variation

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve word problems involving direct variation.

How To: Work with surveys and samples in statistics

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with surveys and samples in general statistics.

How To: Perform a quadratic regression with a calculator

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to find the partial derivative of a vector-valued function using a calculator to perform...

How To: Factor by grouping in intermediate algebra

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this free math lesson, you'll learn how to factor by grouping in intermediate-level algebra.

How To: Solve an absolute value equation

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with absolute value equations.

How To: Find partial derivatives of vector-valued functions

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to find the partial derivative of a vector-valued function in linear algebra or vector c...

How To: Parametrize a surface with two parameters

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to parameterize a surface with two parameters.

How To: Work with mathematical word problems in MS Excel

Looking for a primer on how to create and work with array formulas in Microsoft Office Excel? You've come to the right place. In this free video tutorial from everyone's favorite MS Excel guru, YouTube's ExcelIsFun, the 13th installment in his series of Excel array formula series, you'll learn how to set up, solve and write conclusions for math word problems in Excel.

How To: Solve radical equations with extraneous solutions

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with radical equations containing invalid or "extraneous" solutions.

How To: Visualize data with a histogram chart

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to create a simple histogram chart.

How To: Repeat each successive date in an Excel date column

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 579th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the MOD function and date math to create a column of dates where each successive date is repeated twice.

How To: Create a dynamic equation system in Microsoft Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 263rd installment in their series of digital spreadsheet magic tricks, you'll learn how to create a completely dynamic math equation system (function of x) with formulas, data points, charts and chart labels.

How To: Make calculations with the Pythagorean theorem

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve problems with the Pythagorean theorem in geometry.

How To: Find the asymptote of a rational function in algebra

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate the asymptote of a rational function in college-level algebra.

How To: Evaluate expressions

Having trouble with evaluating expressions at school? This short and easy educational video will take you through the steps that will lead you to accomplishing these problems. It explains the easy process of substitution that will lead you to be able to evaluate the expression that will finally give you the answer. After viewing this video you will be able to tackle any problem dealing with evaluating expressions and will help you along with tackling other math problems in the future.

How To: Subtract fractions

Fractions are confusing, aren't they? They're numbers, but they're not really numbers and they're also pieces of numbers..fractions are a lot of things. When you begin working with fractions, you will need to know how to add and subtract them. In this tutorial, math teacher Mr. Simms shows you how to subtract fractions. This tutorial is very helpful and easy to follow along with. It takes a little practice but everybody is able to learn fractions with enough hard work.

How To: Find the area of a trapezoid

Get help with your math homework and learn to find the area of a trapezoid by watching this video. Following along while four examples are solved, the viewer will learn how to calculate the area when all the required measurements are given and will learn to calculate distance of one side when the area of the trapezoid is known. If you are learning about measurement in school or are trying to find the areas of a trapezoid for another reason (maybe you are carpeting an oddly shaped room), this ...

How To: Reduce a fraction in math

The above video is very informative to anyone who does not know the division of fractions. The author very neatly explains the meaning of a common divisor i.e. it is a number that divides two numbers evenly. Therefore, one must divide a fraction as many times until the remaining fraction has 1 as a divisor. It is very easy to find the common divisor. Both the numerator and the denominator must be divisible by that number. The author in the present video has done a good work.

How To: Find the slope's unit of measure

This educational video from free math tutoring shows how to calculate the slope of a line and assign units to the answer obtained. This video assumes that the viewer is familiar with the concepts of axes and co-ordinate geometry. The narrator uses a commonly used formula to calculate the slope of the line in the first section of the video. In the second section, the narrator demonstrates how to assign units to the answer, as per the question asked.

How To: Knit a Möbius scarf

Learn about math and knitting at the same time, in this video video about making a scarf based on the Möbius strip discovered by German mathematician August Ferdinand Möbius in the 19th century. Popularized by the work of artist M.C. Escher, the Möbius strip is a curious shape that folds back on itself. It makes for an unusual and eye-catching scarf design.

How To: Turn multiplication into sum

This is a handy math trick that show you how to turn a multiplication problem into a sum problem. An unusual way to perform a multiplication. You only need to be able to sum, halve and double numbers. It is not efficient, but it is rather intriguing and fun.