Question

Mass of the earth is $5.97\times {10}^{24}kg$ and mass of the moon is $7.35\times {10}^{22}kg$. What is the difference of their masses?

Answer 1

Mass of Earth = $=5.97\times {10}^{24}Kg$

Mass of the moon $=7.35\times {10}^{22}Kg$

Difference of their masses in $Kg$ $=5.97\times {10}^{24}-7.35\times {10}^{22}$

$=\left(5.97\times {10}^2-7.35\right){10}^{22}$

$=\left(597-7.35\right)\times {10}^{22}$

$=589.65\times {10}^{22}$

$=589.65\times {10}^{24}$

$=5.89\times {10}^{24}$