Everyday Mathematics4 at Home

Unit Resources

Grade 4 Unit 4:
Multidigit Multiplication

Background Information
Vocabulary List
Do-Anytime Activities

Lesson 4-10 Vocabulary

Commutative Property

A property of multiplication (but not of division) that says that changing the order of the numbers being multiplied does not change the answer. This property is often called the turn-around rule in Everyday Mathematics. For example: 3 * 8 = 8 * 3.