Question

Which equation shows that 6 is a factor of 18?

Answer 1

The answer is C. 6x12

6 x 12 is not 18
24-6 is 18, however we want a factor so we can cross this out.

6 can go into 18 because of 3 if that makes sense.
6•3=18
18/3=6


18 x 3 is not a factor.

Answer 2

Since factors need to show that a number can be divided by another and 6*3=18, C is the answer.