Question

What is 58,000,000,000 estimated as the product of a single digit and a power of 10?
a. b.
c. d.

Answer 1

Since we are estimating, round to 60,000,000,000. Now count how many decimal places you would have to move to the left to get to a single digit (until we get to 6.0). That will be your exponent...

6 × 10^10