Question

What is 16,700,000,000,000,000 estimated as the product of a single digit and a power of 10?

a. 2x10^16
b. 2x10^15
c. 1x10^16
d. 1x10^15

Answer 1

Place the decimal point such that there is one non-zero digit to the left of the decimal point. Count the number of decimal places the decimal has "moved" from the original number. This will be the exponent of the 10.