Activity: Answer the questions below using the ‘reversibility’ strategy. Delete the question mark and enter in your answer.
- 15 3 = 5
3 x 5 = 15
- 16 4 = 4
4 x 4 = 16 - 45 5 = 9
5 x 9 = 45 - 70 10 = 7
10 x 7 = 70 - 35 7 = 5
7 x 5 = 35 - 48 8 = 6
8 x 6 = 48
6 x 7 = 42
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