Problem-Solving and Data AnalysisEasyUnit conversion
Problem-Solving and Data Analysis practice question
A runner covers 3 kilometers. Given that 1 kilometer equals 1000 meters, how many meters is this?
- A. 30 meters
- B. 300 meters
- C. 3000 metersCorrect
- D. 30000 meters
Answer: C. 3000 meters
Multiply by the conversion factor: 3 km × 1000 m/km = 3000 m. The trap is miscounting zeros; track units so 'km' cancels and 'm' remains.
Why the other answers are wrong
- A. 30 meters
- You multiplied by 10 instead of 1000 — that's two zeros short.
- B. 300 meters
- You multiplied by 100 instead of 1000; there are three zeros in 1000 meters.
- D. 30000 meters
- You multiplied by 10,000 — one zero too many. 3 × 1000 = 3000.
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