# Multiplication 1.4

#### 1 Intro to New Material

Vocabulary

zero property - any number times 0 is always 0

7 x 0 = 0 or 233,987 x 0 = 0

identity property - any number times 1 is always that number

7 x 1 = 7 or 233,987 x 1 = 233,987

commutative property - two numbers multiplied in any order give the same product

4 x 6 = 24 and 6 x 4 = 24

distributive property - break apart a problem into two simpler problems

4 x 6 = (2 x 6) + (2 x 6)

Watch flocabulary video on multiplication properties

#### 2 Daily Common Core Review

A restaurant cuts its large pizza pies into 8 equal pieces. How many total pieces of pizza are in 9 pies?

#### 3 Guided Practice

Focus Question:

How can you break apart facts?

**Turn and Talk**

So we all know how to multiply facts with 0,1,2 and 5. We are going to combine these facts wit other facts.

Suppose we know that 2 x 4 = 8

Do you need to learn something new to learn 4 x 2 = 8?

What property is being shown here?

**Turn and Talk**

#### 4 Student Practice

Create two 4 x 6 grids on grid paper. Write a multiplication expression for the first grid. Color the second grid with 2 colors to show 2 smaller grids. Make each smaller grid represent a multiplication fact that you already know. Write the multiplication expression for each of these grids.

Work with a partner. Use the grid paper to find 7 x 7 by breaking it apart into two facts.

Try 6 x 8 next.

Turn and talk to your partner about what the distributive property is. How or why can this be helpful?

Try One More

Darnel is replacing the wheels on 8 skateboards. Each skateboard has 4 wheels. How many wheels does he need in all?

#### 5 Closing

View Khan academy video on multiplication

page 15 # 5 please do this in your notebook independently

Pg 15 # 6 -24 EVEN only

You may work QUIETLY together on this

HW Study for your Topic 3/4 Test

Review Sheet