Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 112 h = _____ min
- 3 45 m = _____ m (Give the answer in decimal.)
- 5 14 km = _____ m
- 2 58 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
2
112 h = 120 + 5 = 125 min
(b)
45 m =
80100 m = 0.8 m
3 m + 0.8 m = 3.8 m
(c)
1 km = 1000 m
5 km = 5000 m
14 km =
14 x 1000 = 250 m
5
14 km
= 5000 + 250
= 5250 m
(d)
1 kg = 1000 g
2 kg = 2000 g
58 kg =
58 x 1000 = 625 g
2
58 kg
= 2000 + 625
= 2625 g
Answer(s): 125, 3.8, 5250, 2625