Multiplication

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 Can you think of any other ways to arrange the counters? 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 Could you arrange 20 counters?

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 5 x 4 = 20 4 x 5 = 20

4 + 4 + 4 + 4 + 4 = 20 5 + 5 + 5 + 5 = 20 Now try doing this on your own. 6 counters 14 counters 15 counters

9 counters 8 counters 18 counters 6 counters 2x3=6 3+3=6

3x2=6 2+2+2=6 14 counters 2 x 7 = 14

7 x 2 = 14 7 + 7 = 14 2 + 2 + 2 + 2 + 2 + 2 + 2 = 14 15 counters 5 x 3 = 15

3 x 5 = 15 3 + 3 + 3 + 3 + 3 = 15 5 + 5 + 5 = 15 9 counters

3x3=9 3+3+3=9 3x3=9 3+3+3=9 8 counters

2x4=8 4+4=8 4x2=8 2+2+2+2 =8 18 counters

2 x 9 = 18 9 x 2 = 18 9 + 9 = 18 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 18