This tutorial shows how to measure an object in inches using a ruler. [5:38]

Watch this tutorial to see how to use a ruler to measure an object in millimeters. [5:51]

This tutorial takes you through the process of multiplying two complex numbers together using the FOIL method. [2:45]

This tutorial demonstrates the steps to find the product of pure imaginary numbers. [5:23]

To multiply a matrix by a scalar, just multiply each element in the matrix by the scalar. View this tutorial to see the entire process. [2:28]

Find out how to round a decimal to a given place value. [4:28]

Review how to simplify an algebraic expression in order to prepare for the SAT. Follow this tutorial for practice putting an expression in simplest form. [2:39]

Simplifying an algebraic expression is a fundamental part of solving math problems. Follow along with this tutorial to get some practice. [2:40]

Learn the step-by-step process of substitution used to solve two equations with two variables by watching this tutorial. [3:27]

Discover how to solve two equations each with the same two unknown variables by watching the step-by-step method in this video tutorial. [3:28]

See how to solve an equation involving a fraction in this tutorial. [2:57]

Learn how to solve an inequality using the subtraction property. This video will demonstrate the process using a number line. [3:49]

This video explains how to use the zero product property to factor and solve a quadratic equation. [5:36]

Check out this tutorial to see how to solve a system of linear equations by graphing both lines and finding their intersection. [4:01]

In this tutorial, you'll see how to solve a system of inequalities by graphing both inequalities and finding their intersection. [5:54]

Watch this video tutorial and learn how to combine like terms to solve an equation. [2:29]

This tutorial shows you how to rid of a negative sign in a variable by using the multiplication property of -1. [2:47]

This video tutorial shows you how to get rid of a negative variable in an equation by using the multiplication property of -1. [2:34]

Take a look at this tutorial to see how to use a ratio to create equivalent ratios. [4:34]

Watch this tutorial to see how division is used to solve a word problem. [5:08]