Question

A student found the product of 8 x 10^6 and 5 x 10^9 to be 4 x 10^15. What is the error? What is the correct product?

Answer 1

the correct answer is 4x10^16

8x10^6 times 5 x 10^9

= 40 x 10^15

= 4 x 10^16

there is 40 which is 4 x 10, which you can add to the 10^15 to become 10^16

Explanation:

Answer 2

the correct answer is 4x10^16

8x10^6 times 5 x 10^9
= 40 x 10^15
= 4 x 10^16
there is 40 which is 4 x 10, which you can add to the 10^15 to become 10^16