Background Tutorials

• Evaluating Expressions

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    What Are Numerical and Algebraic Expressions?

    An expression is just a mathematical phrase. In this tutorial, you'll learn about two popular types of expressions: numerical and algebraic expressions. A numerical expression contains numbers and operations. An algebraic expression is almost exactly the same except it also contains variables. Check out this tutorial to learn about these two popular kinds of expressions!

• Working with Exponents

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    What is an Exponent?

    If you have a repeated multiplication, you could write it using exponents! This tutorial introduces exponents and explains how they're used.

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    How Do You Convert a Number in Expanded Form into Exponential Form?

    Exponential form is a quick way to show that a number should be multiplied by itself a certain number of times. In this tutorial, see how to write a repeated multiplication in exponential form!

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    How Do You Convert a Number in Exponential Form into Expanded Form?

    Did you know that exponents are just a quick way to show repeated multiplication? In this tutorial, see how to expand out a value in exponential form to see what it really represents!

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    How Do You Evaluate an Exponent?

    Exponents just indicate repeated multiplication. Watch this tutorial to see how you can evaluate an exponent by first w

• Rules of Exponents

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    What's the Product of Powers Rule?

    Working with exponents can be lots of fun, as long as you understand how they work. In this tutorial you'll see how exponents add when you multiply the same number raised to different exponents!

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    What's the Power of a Power Rule?

    Sometimes you'll see a number with an exponent raised to another exponent, and the first time you see it, you probably think it's a typo! But it's not a typo, it's a real thing, and there's a really nice trick for making it simpler that you'll see in the video.