Find the following values without a calculator.
Which is smaller?
- 2.5 cm or 0.25 m
- 1.4 ℓ or 140 mℓ
- 52 km or 5200 m
(a)
1 m = 100 cm
0.25 m = 0.25 x 100 = 25 cm
2.5 cm < 25 cm
2.5 cm < 0.25 m
(b)
1 ℓ = 1000 mℓ
1.4 ℓ = 1.4 x 1000 = 1400 mℓ
1400 mℓ > 140 mℓ
1.4 ℓ > 140 mℓ
(c)
1 km = 1000 m
52 km = 52 x 1000 = 52000 m
52000 m > 5200 m
52 km > 5200 m
Answer(s): (a) 2.5 cm; (b) 140 mℓ; (c) 5200 m