Find the following values without a calculator.
Which is larger?
- 2.1 cm or 0.21 m
- 2.2 ℓ or 220 mℓ
- 95 km or 9500 m
(a)
1 m = 100 cm
0.21 m = 0.21 x 100 = 21 cm
2.1 cm < 21 cm
2.1 cm < 0.21 m
(b)
1 ℓ = 1000 mℓ
2.2 ℓ = 2.2 x 1000 = 2200 mℓ
2200 mℓ > 220 mℓ
2.2 ℓ > 220 mℓ
(c)
1 km = 1000 m
95 km = 95 x 1000 = 95000 m
95000 m > 9500 m
95 km > 9500 m
Answer(s): (a) 0.21 m; (b) 2.2 ℓ; (c) 95 km