Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 112 h = _____ min
- 9 325 m = _____ m (Give the answer in decimal.)
- 2 15 km = _____ m
- 3 78 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
9 m + 0.12 m = 9.12 m
(c)
1 km = 1000 m
2 km = 2000 m
15 km =
15 x 1000 = 200 m
2
15 km
= 2000 + 200
= 2200 m
(d)
1 kg = 1000 g
3 kg = 3000 g
78 kg =
78 x 1000 = 875 g
3
78 kg
= 3000 + 875
= 3875 g
Answer(s): 185, 9.12, 2200, 3875