Question

What is (6.648 x 10 to the power of 9) - (2.9 x 10 to the power of 7) in scientific notations

Answer 1

6.651*10^9

Explanation:

6.68*10^9-2.9*10^7

You can factor out 10^7 to get

(6.68*10^2-2.9)*10^7

(668-2.29)*10^7

665.71*10^7

Scientific notation would be 6.651*10^9