The average distance from Earth to Mars is 2.25 × 10^8 km, and the distance from Earth to Neptune is 4.3514 × 10^9 km. How much farther is Neptune from Earth than Mars? Express your answer in scientific notation. Do not round your answer. (hint: the answer is equal to 4126400000)

Answer 1

To find 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 × 10^9 km - 2.25 × 10^8 km = ?

In scientific notation, this is equal to 4.3514 × 10^9 km - 2.25 × 10^8 km = 4.3514 × 10^9 km - 0.225 × 10^9 km = 4.3514 × 10^9 km - 0.225 × 10^9 km = (4.3514 - 0.225) × 10^9 km = 4.1264 × 10^9 km.

Therefore, Neptune is 4.1264 × 10^9 km farther from Earth than Mars.