Problem-Solving and Data AnalysisEasy–MediumConverting units
Problem-Solving and Data Analysis practice question
A trail is 3.5 kilometres long. What is the length of the trail in metres? (1 kilometre = 1,000 metres)
- A. 3,500Correct
- B. 350
- C. 35
- D. 35,000
Answer: A. 3,500
Each kilometre is 1,000 metres, so multiply: 3.5 × 1,000 = 3,500 metres.
Why the other answers are wrong
- B. 350
- 350 is 3.5 × 100. A kilometre is 1,000 metres, not 100 — the decimal point moves three places, not two.
- C. 35
- 35 is 3.5 × 10. Going from kilometres to metres multiplies by 1,000.
- D. 35,000
- 35,000 is 3.5 × 10,000, one zero too many. 1 km = 1,000 m.
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