Find the following values without a calculator.
Which is larger?
- 2.3 cm or 0.23 m
- 2.9 ℓ or 290 mℓ
- 84 km or 8400 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
2.9 ℓ = 2.9 x 1000 = 2900 mℓ
2900 mℓ > 290 mℓ
2.9 ℓ > 290 mℓ
(c)
1 km = 1000 m
84 km = 84 x 1000 = 84000 m
84000 m > 8400 m
84 km > 8400 m
Answer(s): (a) 0.23 m; (b) 2.9 ℓ; (c) 84 km