Question

1. The United States has more than 250, 000 rivers. These rivers total about 3,500,000 miles. Express the total number of river miles in scientific notation.

Answer 1

If you convert 840,000 to scientific notation; you would take 840,000 and divide it by 10^5 (ten to the fifth power) which is 100,000 and that would leave you with 8.4 divided by 10^5. Remember scientific notation must be expressed as a number 1 through 9 but less than 10.