Question

1. Please express your answer in scientific notation.

(6.0 x 10^5) x (3.0 x 10^4) =

A. 18 x 10^20
B. 18 x 10^9
C. 1.8 x 10^20
D. 1.8 x 10^10

Answer 1

The answer to this question is B

Answer 2

Rearrange, group all the 10^smth togther
(6.0×3.0)(10^5×10^4)=18×10^9
B