Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 112 h = _____ min
- 6 220 m = _____ m (Give the answer in decimal.)
- 4 15 km = _____ m
- 2 78 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
6 m + 0.1 m = 6.1 m
(c)
1 km = 1000 m
4 km = 4000 m
15 km =
15 x 1000 = 200 m
4
15 km
= 4000 + 200
= 4200 m
(d)
1 kg = 1000 g
2 kg = 2000 g
78 kg =
78 x 1000 = 875 g
2
78 kg
= 2000 + 875
= 2875 g
Answer(s): 65, 6.1, 4200, 2875