Find the following values without a calculator.
Which is smaller?
- 2.1 cm or 0.21 m
- 3.8 ℓ or 380 mℓ
- 11 km or 1100 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
3.8 ℓ = 3.8 x 1000 = 3800 mℓ
3800 mℓ > 380 mℓ
3.8 ℓ > 380 mℓ
(c)
1 km = 1000 m
11 km = 11 x 1000 = 11000 m
11000 m > 1100 m
11 km > 1100 m
Answer(s): (a) 2.1 cm; (b) 380 mℓ; (c) 1100 m