Find the following values without a calculator.
Which is larger?
- 2.8 cm or 0.28 m
- 4.8 ℓ or 480 mℓ
- 72 km or 7200 m
(a)
1 m = 100 cm
0.28 m = 0.28 x 100 = 28 cm
2.8 cm < 28 cm
2.8 cm < 0.28 m
(b)
1 ℓ = 1000 mℓ
4.8 ℓ = 4.8 x 1000 = 4800 mℓ
4800 mℓ > 480 mℓ
4.8 ℓ > 480 mℓ
(c)
1 km = 1000 m
72 km = 72 x 1000 = 72000 m
72000 m > 7200 m
72 km > 7200 m
Answer(s): (a) 0.28 m; (b) 4.8 ℓ; (c) 72 km