Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 112 h = _____ min
- 5 325 m = _____ m (Give the answer in decimal.)
- 5 14 km = _____ m
- 9 12 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
3
112 h = 180 + 5 = 185 min
(b)
325 m =
12100 m = 0.12 m
5 m + 0.12 m = 5.12 m
(c)
1 km = 1000 m
5 km = 5000 m
14 km =
14 x 1000 = 250 m
5
14 km
= 5000 + 250
= 5250 m
(d)
1 kg = 1000 g
9 kg = 9000 g
12 kg =
12 x 1000 = 500 g
9
12 kg
= 9000 + 500
= 9500 g
Answer(s): 185, 5.12, 5250, 9500