Question

3.Amanda is adding the numbers below.
3.7x10^20+4.45x10^20
What is the sum written in scientific notation?

Answer 1

\[
3.7\times10^{\color{red}{20}}+4.45\times10^{\color{red}{20}}
\]
Since the red parts are the same, you can just add the decimal parts together. However, since the 3.7 has one decimal place and 4.45 has two decimal places, you have to round it to one decimal place.

Answer 2

imma guess 1630 thats what i think