Question

what is the solution to (3 x 10^2) x (5 x 10^5) written in scientific notation?A: 1.5x10^8B: 16x10^8c: 1.5x10^7D: 15x10^7

Answer 1

Multiplying gives us 3 x 5 = 15

10^2 x 10^5 = 10^7

So we get 15 x 10^7. However, we need to move the decimal point from 15.0 to 1.5:

1.5 x 10^8. The answer is A.