Question

The mass of Neptune is about 1.03*10^23 metric tons. The massof the sun is about 1.998*10^27 metric tons. About how many times the mass of Neptune is the mass of the sun? Give your answer in scientific notation.

Answer 1

Mass(sun)/Mass(neptune) = 1.998 x 10^27 / 1.03 x 10^23
which is approx = 2 x 10^27 / 1 x 10^23 = 2 x 10^4