Multiplication Topic 2

Models

100

Use EQUAL GROUPS to show 6 x 2 = ___. Find the product. 

6 equal groups with 2 inside each group. 

6 x 2 = 12

200

Build an array to show 4 x 5 = ___. Find the product. 

4 x 5 = 20 

4 rows with 5 columns.

300

Build a number line to show 3 x 6 = ____. Solve for the product. 

3 x 6 = 18

3 jumps of 6 is equal to 18.

400

Melanie made 3 plates of 5 cookies. Build a model to represent and solve this problem. 

3 plates of 5 cookies.

3 equal groups of 5. 

3 rows with 5 columns.

3 jumps of 5 on the number line. 

500

Show two DIFFERENT arrays that have the same factors and the same product. (Hint: Use the commutative property of multiplication)

Example:

3 x 5 = 15

5 x 3 = 15

Solve

100

Find the product: 

2 x 3 = ___

2 x 3 = 6

Skip counting: 2, 4, 6

200

Find the product: 

4 x 10 = ____

4 x 10 = 40

Skip counting: 10, 20, 30, 40

300

Find the product: 

5 x 0 = ___ 

5 x 0 = 0

Skip counting: 0 means there is nothing to skip count. 

400

Find the product: 

8 x 2 = _____

8 x 2 = 16

2, 4, 6, 8, 10, 12, 14, 16 

500

Find the product: 

6 x 5 = __

6 x 5 = 30

Skip counting: 5, 10, 15, 20, 25, 30

Word Problem

100

Mary bought 4 packages of tennis balls. Each package had 3 tennis balls. How many tennis balls did Mary buy?

Mary bought 12 tennis balls. 

4x3=12

200

Amy rides her bike for 10 minutes each day. How many minutes does she ride her bike in 5 days?

Amy rides her bike for 50 minutes. 

10 + 10 + 10 + 10 + 10 = 50 minutes

5 x 10 = 50 minutes

300

There are 2 boxes of pencils at each table in the classroom. There are 3 tables in the classroom. Inside each box, there are 5 pencils. How many pencils are there in all?

2 boxes on 3 tables = 6 boxes in total

6 boxes with 5 pencils in each box is 6x5

6x5= 30 pencils in all

400

Katherine bought 3 packages of stickers. Each package had 5 stickers. Then, Katherine bought 2 more packages. How many stickers did Katherine buy in all?

Katherine bought 25 stickers.

5 + 5 + 5 = 15 stickers for the first 3 packages

5 + 5 =10 stickers for the second 2 packages.

5 + 5 + 5 + 5 + 5 = 25 for all 5 packages.

Let's look at that on a number line!

500

Efrain was buying packages of Pokemon cards. Each package had 5 cards. Is it possible for Efrain to buy 18 Pokemon cards? Why or why not?

No, because 23 is not a multiple of 5.

1 package of cards= 5 cards (1x5=5)

2 packages of cards = 10 cards (2x5=10)

3 packages of cards = 15 cards (3x5=15)

4 packages of cards = 20 cards (4x5=20)

Multiples

100

Is 8 a multiple of 2?

Show how you know. 

Yes

Skip Counting: 2, 4, 6, 8 or 

2 x 4 = 8

200

Is 54 a multiple of 10?

Show how you know.

No, 54 is NOT a multiple of 10.

Skip counting: 10, 20, 30, 40, 50, 60

5x10=50 and 6x10=60 

300

Is 31 a multiple of 5?

Show how you know?

No, 31 is NOT a multiple of 5. 

Skip counting: 5, 10, 15, 20, 25, 30, 35

6x5=30 and 7x5=35

400

Is 20 a multiple of 10 and 2?

Show how you know.

Yes, 20 is a multiple of 10 and 2. 

Skip count by 2s: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20

Skip count by 10s: 10, 20

Both have 20 in their list of multiples. 

500

Is 15 a multiple of 2 and 5?

No, because 15 is NOT a multiple of 2. It is only a multiple of 5. 

Skip count by 2s: 2, 4, 6, 8, 10, 12, 14, 16

Skip count by 5s: 5, 10, 15, 20

15 is only on the list of multiples for 5s, not 2s.

True or False

100

5 x 0 = 0 

True

200

1 x 7 = 7

True

300

9 x 1 = 10

False

400

22 is a multiple of 5. 

False.

The multiples of 5 are 5, 10, 15, 20, 25. 

500

10 is a multiple of 2. 

True.

2, 4, 6, 8, 10. 

2 x 5 = 10