Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 112 h = _____ min
- 4 820 m = _____ m (Give the answer in decimal.)
- 5 12 km = _____ m
- 3 12 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
3
112 h = 180 + 5 = 185 min
(b)
820 m =
40100 m = 0.4 m
4 m + 0.4 m = 4.4 m
(c)
1 km = 1000 m
5 km = 5000 m
12 km =
12 x 1000 = 500 m
5
12 km
= 5000 + 500
= 5500 m
(d)
1 kg = 1000 g
3 kg = 3000 g
12 kg =
12 x 1000 = 500 g
3
12 kg
= 3000 + 500
= 3500 g
Answer(s): 185, 4.4, 5500, 3500