# Math Help - Arithmetic involving powers.

1. ## Arithmetic involving powers.

Hi guys,
Okay, so I have a question.

If I have to solve a question like this one:
9 x 10^3
__________

(9 x 10^13)x(6x10^-4)

(that means the 9x10^3) is divided by the numbers in the line beneath).

My question is: could i cross out the '9s' in the top and bottom and still get the right answer (as long as I simplify the exponents correctly?) Please help.