The average distance from earth to Mars is 2.25×10⁸ km, and the distance from earth to Neptune is 4.3514×10⁹ km. How much farther is Neptune from earth than Mars? Express your answer in scientific notation. Do not round your answer.

Answer 1

To find out how much farther Neptune is from Earth than Mars, we subtract the distance from Earth to Mars from the distance from Earth to Neptune.

Distance from Earth to Neptune - Distance from Earth to Mars

= 4.3514×10⁹ km - 2.25×10⁸ km

= 4.3514×10⁹ km - 0.225×10⁹ km

= (4.3514 - 0.225)×10⁹ km

= 4.1264×10⁹ km

So, Neptune is 4.1264×10⁹ km farther from Earth than Mars.