Estimate With Powers of 10 Practice Test

A science website lists the EarthMoon distance as about $4\times10^5$ km and the EarthSun distance as about $1.5\times10^8$ km. About how many times farther is the Sun than the Moon (from Earth)?

The average distance from Earth to the Moon is about $4\times 10^5$ km, and the average distance from Earth to the Sun is about $1.5\times 10^8$ km. About how many times farther is the Sun than the Moon?