Question

Which of the following expressions is 0.00012 written in scientific notation?

1.2 × 10 4
.12 × 10 -3
1.2 × 10 -4
12 × 10 -5

Answer 1

0.00012

12/100000

12*10^-5

1.2*10^-5+1

1.2*10^-4

Answer 2

0.00012

12/100000

12*10^-5

1.2*10^-5+1

1.2*10^-4