1. Which of the following is 0.000000708 written in scientific notations?
   

A.7.08×10^-8

B.7.8×10^-8

C.708×10^-10

D.70.08×10^-9

1. Which expression represents the largest number
   

A.40.1×10^-6

B.4.1×10^-7

C.0.411×10^-7

D.0.04001×10-5

1. Which expression is equal to 1 over 8000 written in scientific notations
   

A.8.0×10^3

B.1.25×10^-4

C.125×10^-5

D.1.25×10^4