Find the following values without a calculator.
Which is smaller?
- 2.8 cm or 0.28 m
- 2.8 ℓ or 280 mℓ
- 86 km or 8600 m
(a)
1 m = 100 cm
0.28 m = 0.28 x 100 = 28 cm
2.8 cm < 28 cm
2.8 cm < 0.28 m
(b)
1 ℓ = 1000 mℓ
2.8 ℓ = 2.8 x 1000 = 2800 mℓ
2800 mℓ > 280 mℓ
2.8 ℓ > 280 mℓ
(c)
1 km = 1000 m
86 km = 86 x 1000 = 86000 m
86000 m > 8600 m
86 km > 8600 m
Answer(s): (a) 2.8 cm; (b) 280 mℓ; (c) 8600 m