Find the following values without a calculator.
Which is smaller?
- 4.6 cm or 0.46 m
- 2.1 ℓ or 210 mℓ
- 71 km or 7100 m
(a)
1 m = 100 cm
0.46 m = 0.46 x 100 = 46 cm
4.6 cm < 46 cm
4.6 cm < 0.46 m
(b)
1 ℓ = 1000 mℓ
2.1 ℓ = 2.1 x 1000 = 2100 mℓ
2100 mℓ > 210 mℓ
2.1 ℓ > 210 mℓ
(c)
1 km = 1000 m
71 km = 71 x 1000 = 71000 m
71000 m > 7100 m
71 km > 7100 m
Answer(s): (a) 4.6 cm; (b) 210 mℓ; (c) 7100 m