Math5 1

How Can You Use a Model to Multiply?

What is an array?A set that shows equal groups in rows and columns.

COLUMNS

ROW

S

3 x 4 =12

4 + 4 +4

Use place-value blocks provides a way to visualize and find the partial products.

10 x 13 =

Use place-value blocks.

1

23

4

5

6

7

8

9

10

10

Equal Groups13

1310x00301301

Use place-value blocks.

Use place-value blocks.10

Equal Groups16

10 x 16 =

1610x00601601

Use place-value blocks.

10 groups of 10

10 groups of 6

10

1 00

+

6

6 0

1 6 0

Use the grid to find each product.

123456789

10

10

2 3 4 5 6 7 8 9 10

101 2 3 4 5 6 7 8 9 10

8 21 2

10 x 20 = 200 10 groups of 10=10 groups of 08 =10 groups of 02 =

100 80 20+200

Use the grid to find each product.

Use the grid to find each product

20*18=279