Find the following values without a calculator.
Which is smaller?
- 2.5 cm or 0.25 m
- 4.1 ℓ or 410 mℓ
- 23 km or 2300 m
(a)
1 m = 100 cm
0.25 m = 0.25 x 100 = 25 cm
2.5 cm < 25 cm
2.5 cm < 0.25 m
(b)
1 ℓ = 1000 mℓ
4.1 ℓ = 4.1 x 1000 = 4100 mℓ
4100 mℓ > 410 mℓ
4.1 ℓ > 410 mℓ
(c)
1 km = 1000 m
23 km = 23 x 1000 = 23000 m
23000 m > 2300 m
23 km > 2300 m
Answer(s): (a) 2.5 cm; (b) 410 mℓ; (c) 2300 m