Find the following values without a calculator.
Which is smaller?
- 4.6 cm or 0.46 m
- 4.9 ℓ or 490 mℓ
- 31 km or 3100 m
(a)
1 m = 100 cm
0.46 m = 0.46 x 100 = 46 cm
4.6 cm < 46 cm
4.6 cm < 0.46 m
(b)
1 ℓ = 1000 mℓ
4.9 ℓ = 4.9 x 1000 = 4900 mℓ
4900 mℓ > 490 mℓ
4.9 ℓ > 490 mℓ
(c)
1 km = 1000 m
31 km = 31 x 1000 = 31000 m
31000 m > 3100 m
31 km > 3100 m
Answer(s): (a) 4.6 cm; (b) 490 mℓ; (c) 3100 m