on number 5 you would move the decimal to the right 2 times 97.5%
on number 6 you take the 17 out of the hundred and you end up with 17%
on number 8 you divide 2 divided by 5 and you get 0.4 and you move the decimal to the right once and you get 4%
on number 9 on only 1% lives in solar homes you just move the decimal to the left once so it would be .1