Question

The distance of planet Jupiter from the Sun is approximately 7.8 ⋅ 108 kilometers, and the distance of planet Mercury from the Sun is approximately 5.8 ⋅ 107 kilometers. About how many more kilometers is the distance of Jupiter from the Sun than the distance of Mercury from the Sun?

Answer 1

7.8X10^8-5.8X10^7 is the same as:

7.8X10^8-0.58X10^8 which is equal to:

(7.8-0.58)(10^8)

(7.22)(10^8)

7.22X10^8 (about 722 million miles difference)