Question

Which of the following expressions is written in scientific notation?

A 13 × 10 4
B 0.2 × 10 -5
C 1 × 10 -3
D 31.4 × 10 4

Answer 1

D. 31.4 times 10.4 because it is written with decimals unlike the others

Answer 2

the answer is D because the 31.4 is the decimal and the 10 to the 4 is scientific notation