# Thread: Calculating percentage of exponents.

1. ## Calculating percentage of exponents.

Trying to figure out some astronomy. Please let me know if I am doing this correctly.

I want to find 95% of 1.98 x 10^30.

I divided 1.98 x 10^30 by 100 to get 1.98 x 10^28. Then multiplied 1.98 x 10^28 by 95 to get 1.88 x 10^30. So I have 1.88 x 10^30 as 95% of 1.98 x 10^30. Is that the way you do it? thanks.

2. Hans Bethe, I live in you.

Hans Bethe House

3. I mean usually people do $95$% $=.95...$

$.95 \times (1.98 \times 10^{30}).$

4. Originally Posted by Anonymous1
Hans Bethe, I live in you.

Hans Bethe House
lol. that's sweet. Bethe was brilliant.

and thanks. it comes out the same but your way is easier.