One kilometer equals how many meters?

One kilometer equals how many meters?

• A. 100 m
• B. 1000 m
• C. 10,000 m
• D. 1 m

Answer: (B)

In the metric system, prefixes scale by powers of ten. The prefix kilo- means 1000, and the base unit for length is the meter. So one kilometer is 1000 meters. You can picture it as 1000 meters laid end to end to form a kilometer. For conversions, multiply by 1000 when going from kilometers to meters: 1 km = 1000 m. Extra checks: 100 m is just 0.1 km, 10,000 m is 10 km, and 1 m is 0.001 km. The correct amount is 1000 meters.

In the metric system, prefixes scale by powers of ten. The prefix kilo- means 1000, and the base unit for length is the meter. So one kilometer is 1000 meters. You can picture it as 1000 meters laid end to end to form a kilometer. For conversions, multiply by 1000 when going from kilometers to meters: 1 km = 1000 m.

Extra checks: 100 m is just 0.1 km, 10,000 m is 10 km, and 1 m is 0.001 km. The correct amount is 1000 meters.