Find the following values without a calculator.
Which is larger?
- 2.1 cm or 0.21 m
- 3.4 ℓ or 340 mℓ
- 81 km or 8100 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
3.4 ℓ = 3.4 x 1000 = 3400 mℓ
3400 mℓ > 340 mℓ
3.4 ℓ > 340 mℓ
(c)
1 km = 1000 m
81 km = 81 x 1000 = 81000 m
81000 m > 8100 m
81 km > 8100 m
Answer(s): (a) 0.21 m; (b) 3.4 ℓ; (c) 81 km