Hot Math Posts
How To: Find the greatest common factor of two numbers
Looking for a guide on how to calculate the greatest common divisor for two numbers? 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 ...
How To: Calculate the area of rectangles and triangles
Need to know how discover the area of a triangle or rectangle? 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 area and peri...
How To: Add and subtract negative numbers in basic arithmetic
Looking for a guide on how to sum and subtract negative integers? 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 add and subtract ne...
How To: Write rational expressions in lowest terms
In arithmetic, the simplest expression is far preferred to the long eye-boggling one. Stop making your expressions painful optical illusions by watching this tutorial on how to write rational expressions in the lowest terms.
How To: Multiple, reduce, add, and subtract fractions
Get an all-in-one brain teaser by watching this math tutorial on how to simplify an expression that requires multiplying, reducing, adding, and subtracting.
How To: Simplify rational expressions in algebra
Mathematical expressions containing binomials create double the pleasure for math geeks because they get twice as much expressions to solve.
How To: Add and substract complex numbers in algebra
Math has always had the reputation of being nonimaginative, dry, and straight to the point, but mathematicians like to have fun, too! Perhaps that's why they invented imaginary complex numbers dealing with "i."
How To: Simplify and rewrite the complex number "i"
The powers of the complex number "i" run their course in a cyclical nature, like annual seasons of "American Idol." Simplify your life - or at least your math class life - by learning how to rewrite the powers of "i" into simple, single variable expressions.
How To: Rewrite radicals using complex numbers
A complex number is half real (a) and half imaginary (bi), just like that Edward Cullen who makes your heart thump realistically but whose sparkly chest makes you wonder if he's something more.
How To: Simplify complex fractions in algebra
Being circuitous and using ample euphemisms has gotten many a politan elected by the dumb and hated by the knowing. Though embellishing speech is often preferred in jovial presidential debates, mathematicians prefer to cut out the fat and get straight to the point.
How To: Divide complex numbers in algebra
This series on complex numbers will help you solve equations with the cute variable "i" with ease by multiplying by the conjugate.
How To: Solve basic linear equations in algebra
Linear equations are inescapable in life - whether you're taking algebra, geometry, or trigonometry, linear equations are the foundation of math as we know it.
How To: Solve linear equations in algebra
Who needs to watch the new "Iron Man" movie when you can solve linear equations? Brush up on your x's and y'x with this video, which teaches you how to solver a linear equation.
How To: Solve a basic rational equation
You don't have to be brainiac Sheldon Cooper from "The Big Bang Theory" to whip out some impressive ration equation-solving chops.
How To: Convert a simple decimal to a fraction
Fractions to decimals, decimals to fractions... it can get a bit confusing from time to time. That's why there are free videos out there to help you in your math weaknesses. In this video, learn how to easily convert a simple decimal to a fraction in just a few steps.
How To: Solve advanced rational equations 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 find the partial derivative of how to solve more challenging rational equations in al...
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: Write an analytical proof of the quadratic formula
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 write a formal analytical proof of the quadratic formula.
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: Identify an exponential model
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 identify and work with exponential models.
How To: Solve radical expressions with higher roots
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 with higher-value roots.
How To: Work with linear, quadratic & exponential models
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 linear, quadratic and exponential models.
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: Get the volume of rectangular prisms
Attention math heads! Brush up on your high school math skills with help from this video made by a Lincoln High School teacher on how to find the volume of a rectangular prism. Find the answer you're looking for with help from this educational math video.
How To: Plot absolute values on a number line
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 plot absolute values on a number line in simple algebra/geometry.
How To: Solve an equation for a variable in Microsoft Excel
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 an equation for a variable in 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: Find mean, median, & mode (averages)
If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 34th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use MEAN, MEDIAN, MODE. These measures give us a typical value, a measure of central tendency one value that can repr...
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: Find the position of a vector-valued function
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 determine the position vector-valued function for parameterization.
How To: Reduce fractions using different strategies
There are a couple of strategies for reducing fractions and each of them require a strong knowledge of multiplication tables. In this tutorial, learn how to cancel numbers when reducing fractions with help from a real math teacher.
How To: Work with equivalent fractions
In this tutorial you will learn how to determine and work with equivalent fractions. If you do not know what an equivalent fraction is or how to find them, this is the video for you.
How To: Turn a mixed number into an improper fraction
Sometimes math problems are easier to solve if you can convert a number into different types. In this tutorial, taught by a real math teacher, learn how to take a mixed number and turn it back into an improper fraction, and vice versa. This process won't take long and it will help you on many types of algebra problems.
How To: Make a mixed number from an improper fraction
Sometimes, problems are easier to solve if the numbers are presented in different ways. For example, if you are having trouble doing an equation with an improper fraction, consider turning that fraction into a mixed number to make math easier.
How To: Find the volume of a cylinder
Need help calculating the volume of a cylinder? It's easy! So easy, in fact, that a complete and thorough overview of the process can be presented in forty-five seconds' time. Study for your next geometry test or just finish your homework with this free video math lesson, which demonstrates how to find the volume of a cylinder using v=pr^2h.
How To: Graph a linear equation by plotting points
When you begin to graph equations you will need to know how to do so in different ways. In this tutorial, learn exactly how to graph linear equations by plotting points.
How To: Calculate the United States unemployment rate
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 calculate the US unemployment rate given the raw data.
How To: Work with radical equations 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 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 algebraic equations.
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.