Question

How do you know that 4x2x2 is the same as 4x4

Answer 1

Because 2×2=4
so 4×4=16
and 4×2×2=16

Answer 2

If you would like to know if 4x2x2 is the same as 4x4, you can find out using the following step:

2x2 equals to 4, so instead of 2x2 you can write 4.

The result is: 4x2x2 = 4x(2x2) = 4x4, which is the same as 4x4 in the second part of the question.