Multiplication Properties

4th Grade Lesson 14

Write the expressions that go with the sets.

Write the expressions that go with the sets.

4 friends went shopping for the holidays. Each friend bought 2 boxes of cookies. Each box had 3 cookies. How many cookies did the friends buy together?

Write an expression for the story problem

A store was selling packages of cookies. Each package has four kinds of cookies. There are two of each kind. 3 shoppers came in the bakery together. Each shopper bought a package.

Write an expression for the story problem

Write an expression for the number of people in a car.

Write an expression for the number of people in a car.

Write an expression for pickle jars.

Six pickle jars, but no pickles

Practicing the Properties:

Which property of multiplication is shown?

1. (5 × 6) × 3 = 5 × (6 × 3) ___________2. 9 × 8 = 8 × 9 ___________3. 0 = 9 × 0 ___________4. 1 × 5 = 5 ___________

Practicing the Properties: 4. Which property of multiplication is shown?

(5 × 6) × 3 = 5 × (6 X 3)5. Which equation shows the commutative property of

multiplication?a. 8 × (1 – 0) = 8 × 1 – 8 × 0b. 7 × 8 = 8 × 7c. 5 × (3 + 9) = 5 × 3 + 5 × 9d. 8 + 8 + 8 + 8 + 8 = 5 × 8

6. Which property of multiplication is shown? 6 × 5 + 2 × 5 = (6 + 2) × 5

7. Which property of multiplication is shown? 4 × 0 = 0