Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 112 h = _____ min
- 5 25 m = _____ m (Give the answer in decimal.)
- 6 12 km = _____ m
- 2 12 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
1
112 h = 60 + 5 = 65 min
(b)
25 m =
40100 m = 0.4 m
5 m + 0.4 m = 5.4 m
(c)
1 km = 1000 m
6 km = 6000 m
12 km =
12 x 1000 = 500 m
6
12 km
= 6000 + 500
= 6500 m
(d)
1 kg = 1000 g
2 kg = 2000 g
12 kg =
12 x 1000 = 500 g
2
12 kg
= 2000 + 500
= 2500 g
Answer(s): 65, 5.4, 6500, 2500