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)
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.