Which of these units is the smallest?
- The millimetre
- The metre
- The kilometre
- The centimetre
Show answer and solution
Correct answer: A. The millimetre
1. 1 km = 1000 m and 1 m = 100 cm.
2. 1 cm = 10 mm.
3. So the millimetre is the smallest of the four.
_Source: Wikipedia, Kilometre (CC BY-SA 4.0, rev 1368779852), kilometre_