Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 112 h = _____ min
- 7 725 m = _____ m (Give the answer in decimal.)
- 7 12 km = _____ m
- 6 14 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
2
112 h = 120 + 5 = 125 min
(b)
725 m =
28100 m = 0.28 m
7 m + 0.28 m = 7.28 m
(c)
1 km = 1000 m
7 km = 7000 m
12 km =
12 x 1000 = 500 m
7
12 km
= 7000 + 500
= 7500 m
(d)
1 kg = 1000 g
6 kg = 6000 g
14 kg =
14 x 1000 = 250 g
6
14 kg
= 6000 + 250
= 6250 g
Answer(s): 125, 7.28, 7500, 6250