Question

calculate.
$(5.5 \times 10^{-9}) - (4.6 \times 10^{-9})$
write your answer in scientific notation.

Explanation:

Step1: Factor out common term

$10^{-9} \times (5.5 - 4.6)$

Step2: Subtract the decimals

$10^{-9} \times 0.9$

Step3: Rewrite in proper scientific notation

$9.0 \times 10^{-10}$

Answer:

$9.0 \times 10^{-10}$