Multiplication and division

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This course is a part of 3rd grade, a 18-course Topic series from Khan Academy.

Multiplication and division are two of the most important operations to understand in math. If you drink 2 cups of water, 5 times, how much water have you drunk? If you need to divide 9 slices of cake between 3 friends, how much cake does each friend get?

This course contains 10 segments:

Multiplication intro

Welcome to the concept of multiplication.

Multiplication facts

Learn multiplication facts (sometimes called times tables).

Relating multiplication and division

Let's see how multiplication and division are related.

Division intro

Welcome to the concept of division.

Division facts

Learn your division facts

More with 1-digit multiplication and division

Take an understanding of basic multiplication and division a little further to solve for unknowns in multiplication and division problems.

Properties of multiplication

Learn about the commutative, associative, and distributive properties of multiplication. Solve multiplication problems by changing the order of factors (commutativity), the grouping of factors (associativity), and by decomposing the factors (distributive property).

One and two-step word problems

We are now going to solve real-world problems using multiple steps. Along the way, we'll be using letters to represent unknown quantities. Common Core Standard: 3.OA.D.8

Multiplying by tens

As we'll see in this tutorial, multiplying a multiple of 10--like 10, 20, 30, 40, etc.--by a single digit number is not too much more complicated. Common Core Standard: 3.NBT.A.3

Patterns in arithmetic

Math is full of patterns that will keep emerging as you explore it (this is what makes math so beautiful). We begin to just scratch the surface in this tutorial! Common Core Standards: 3.OA.B.5, 3.OA.D.9