Find the following values without a calculator.
Which is larger?
- 2.8 cm or 0.28 m
- 4.2 ℓ or 420 mℓ
- 61 km or 6100 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
4.2 ℓ = 4.2 x 1000 = 4200 mℓ
4200 mℓ > 420 mℓ
4.2 ℓ > 420 mℓ
(c)
1 km = 1000 m
61 km = 61 x 1000 = 61000 m
61000 m > 6100 m
61 km > 6100 m
Answer(s): (a) 0.28 m; (b) 4.2 ℓ; (c) 61 km