Question

How to simplify `(3 times 10^7)(5 times 10^4)` in scientific notation?

Answer 1

You multiply the numbers and add the 10-powers

Explanation:

`=(3*5)*10^(7+4)=15*10^11`

Since scientific notation allows only one non-zero before the decimal point, you will have to make make an extra step:

`=1.5*10*10^11=1.5*10^12`