Find the following values without a calculator.
Which is larger?
- 2.3 cm or 0.23 m
- 1.4 ℓ or 140 mℓ
- 30 km or 3000 m
(a)
1 m = 100 cm
0.23 m = 0.23 x 100 = 23 cm
2.3 cm < 23 cm
2.3 cm < 0.23 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
30 km = 30 x 1000 = 30000 m
30000 m > 3000 m
30 km > 3000 m
Answer(s): (a) 0.23 m; (b) 1.4 ℓ; (c) 30 km