Question

Which is the sum of 70,000,000 and 4times 10^8

Answer 1

470,000,000 or 4.7 * 10^8.

Explanation:

4 * 10^8 = 400,000,000

add: 70,000,000

= 470,000,000

Answer 2

4.7 x 10^8

Explanation:

70,000,000 is 7.0x10^7

4x10^8 can also be written as 40x10^7

7.0x10^7

40x10^7

47x10^7 or 4.7 x 10^8