Say you have the fraction 1/2 to the power of 2, so 1/2^2. You could also write this down as: 1/2*(times)1/2 or 0,5*0,5. Whenever you multiply by a number smaller than one, the outcome will get smaller. Whenever you multiply by a number larger than one, the outcome will be larger.
What do you need help with? Please provide a picture next time.
Well twenty hundreds is equal to 2000 and eight tens is equal to 80. So, 2000x80=160000
