Question

Simplify (5.8 x 10−8) − (2.5 x 10−9). Write the final answer in scientific notation.

Answer 1

5.55 × 10^-8

Explanation:

5.8 × 10^-8 - 2.5 × 10^-9 =

We need both numbers with the same exponent on 10.

= 5.8 × 10^-8 - 0.25 × 10^-8

= 5.55 × 10^-8