Question

How do you calculate `(6.3times10^3) div (2.5times10^8)`?

Answer 1

`2.52 xx 10^-5`

Explanation:

Consider `(12 xx x^3)/(8xx x^8)`

simplify the numbers `rarr 3/2 xx x^-5 larr` subtract the indices

Do exactly the same with `(6.3xx10^3)/(2.5 xx10^8)`

simplify the numbers `rarr 2.52 xx 10^-5 larr` subtract the indices.

Note: usually we would not leave an answer with a negative indexm but as we are dealing with scientific notation, in this case we do.