Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 112 h = _____ min
- 2 220 m = _____ m (Give the answer in decimal.)
- 2 14 km = _____ m
- 3 45 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
1
112 h = 60 + 5 = 65 min
(b)
220 m =
10100 m = 0.1 m
2 m + 0.1 m = 2.1 m
(c)
1 km = 1000 m
2 km = 2000 m
14 km =
14 x 1000 = 250 m
2
14 km
= 2000 + 250
= 2250 m
(d)
1 kg = 1000 g
3 kg = 3000 g
45 kg =
45 x 1000 = 800 g
3
45 kg
= 3000 + 800
= 3800 g
Answer(s): 65, 2.1, 2250, 3800