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Multiplication. LI: To be able to write number sentences to describe an array. I have 12 counters. . How could I arrange them into equal rows?. What number sentences could you write to go with this array?. 2 x 6 = 12. 6 x 2 = 12. 6 + 6 = 12. 2 + 2 + 2 + 2 + 2 + 2 = 12.

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multiplication

Multiplication

LI: To be able to write number sentences to describe an array

slide2

I have 12 counters.

How could I arrange them into equal rows?

slide3

What number sentences could you write to go with this array?

2 x 6 = 12

6 x 2 = 12

6 + 6 = 12

2 + 2 + 2 + 2 + 2 + 2 = 12

slide5

What number sentences could you write to go with this array?

3 x 4 = 12

4 x 3 = 12

4 + 4 + 4 = 12

3 + 3 + 3 + 3 = 12

slide7

What number sentences could you write to go with this array?

2 x 10 = 20

10 x 2 = 20

10 + 10 = 20

2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 20

OR …

slide8

5 x 4 = 20

4 x 5 = 20

4 + 4 + 4 + 4 + 4 = 20

5 + 5 + 5 + 5 = 20

slide9

Now try doing this on your own.

6 counters

14 counters

15 counters

9 counters

8 counters

18 counters

slide10

6 counters

2 x 3 = 6

3 x 2 = 6

3 + 3 = 6

2 + 2 + 2 = 6

slide11

14 counters

2 x 7 = 14

7 x 2 = 14

7 + 7 = 14

2 + 2 + 2 + 2 + 2 + 2 + 2 = 14

slide12

15 counters

5 x 3 = 15

3 x 5 = 15

3 + 3 + 3 + 3 + 3 = 15

5 + 5 + 5 = 15

slide13

9 counters

3 x 3 = 9

3 x 3 = 9

3 + 3 + 3 = 9

3 + 3 + 3 = 9

slide14

8 counters

2 x 4 = 8

4 x 2 = 8

4 + 4 = 8

2 + 2 + 2 + 2 = 8

slide15

18 counters

2 x 9 = 18

9 x 2 = 18

9 + 9 = 18

2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 18