Question

sierra has a hard time remembering tje product of 9x8. if she knows that 10x8=80, describe how she can use this to help

Answer 1

Subtract 8 = 72

Explanation:

10 x 8 is 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8

9 x 8 is 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8