Question

Catherine solved 4 × 9 = .

Which fact can Catherine use to check her answer?

A.
5 + 4 = 9

B.
36 ÷ 9 = 4

C.
13 – 9 = 4

Answer 1

B 36/9 = 4.

9 * 4 = 36

Because of this, if you divide 36 by 9 you should get four, just like if you divided 36 by 4 you would get 9.

Answer 2

the answer is b, because division checks multiplication.