If you multiply a number times it self what is the answer?

Answer 1

I think you're asking what multiplying a number by itself is called. If so, it's called "squaring" or "squared". For example:

2 squared, (or 2 x 2) which is 22 = 4

5 squared, (or 5 x 5) which is 52 = 25

12 squared, (or 12 x 12) which is 122 = 144