Find the following values without a calculator.
Which is larger?
- 4.9 cm or 0.49 m
- 1.9 ℓ or 190 mℓ
- 48 km or 4800 m
(a)
1 m = 100 cm
0.49 m = 0.49 x 100 = 49 cm
4.9 cm < 49 cm
4.9 cm < 0.49 m
(b)
1 ℓ = 1000 mℓ
1.9 ℓ = 1.9 x 1000 = 1900 mℓ
1900 mℓ > 190 mℓ
1.9 ℓ > 190 mℓ
(c)
1 km = 1000 m
48 km = 48 x 1000 = 48000 m
48000 m > 4800 m
48 km > 4800 m
Answer(s): (a) 0.49 m; (b) 1.9 ℓ; (c) 48 km