Question

Brad knows the answer to 5 multiplied by 7 how does this help him solve the answer to 8 multiplied by 7?

Answer 1

Breaking up the multiplicand 8 into (5+3) allows us to apply the associative property of multiplication. See below.

Explanation:

5*7 = 35. We want the product 8*7. Note that 8 = 5+3. Thus, 8*7=(5+3)(7) = 35 + 21, or 56.