Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 112 h = _____ min
- 2 220 m = _____ m (Give the answer in decimal.)
- 8 12 km = _____ m
- 5 12 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
2
112 h = 120 + 5 = 125 min
(b)
220 m =
10100 m = 0.1 m
2 m + 0.1 m = 2.1 m
(c)
1 km = 1000 m
8 km = 8000 m
12 km =
12 x 1000 = 500 m
8
12 km
= 8000 + 500
= 8500 m
(d)
1 kg = 1000 g
5 kg = 5000 g
12 kg =
12 x 1000 = 500 g
5
12 kg
= 5000 + 500
= 5500 g
Answer(s): 125, 2.1, 8500, 5500