Question

Select the correct answer ? What is the sum of 9.72 x 10^8 and 1.93 x 10^7?

Answer 1

Answer:

B

Step-by-step explanation:

(9.72 × $10^{8}$) + (1.93 × $10^{7}$)

Take out $10^{7}$ as a common factor

= $10^{7}$(9.72 × 10 + 1.93)

= $10^{7}$(97.2 + 1.93)

= $10^{7}$ × 99.13

= $10^{7}$ × 9.913 × $10^{1}$

= 9.913 × $10^{8}$ → B