Question

Find the difference. Write your answer in scientific notation.

(6.33×10−9)−(4.5×10−9)=

Answer 1

1.83×
`10^(-9)`

Explanation:

The exponent on the base of ten is -9 for both. The easiest way to do this when that is the case is to factor it out:

`10^(-9)(6.33-4.5)`

and then perform the subtraction to give you

1.83×
`10^(-9)`