Find the following values without a calculator.
Which is larger?
- 2.9 cm or 0.29 m
- 1.4 ℓ or 140 mℓ
- 81 km or 8100 m
(a)
1 m = 100 cm
0.29 m = 0.29 x 100 = 29 cm
2.9 cm < 29 cm
2.9 cm < 0.29 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
81 km = 81 x 1000 = 81000 m
81000 m > 8100 m
81 km > 8100 m
Answer(s): (a) 0.29 m; (b) 1.4 ℓ; (c) 81 km