Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 112 h = _____ min
- 7 620 m = _____ m (Give the answer in decimal.)
- 3 15 km = _____ m
- 4 15 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
3
112 h = 180 + 5 = 185 min
(b)
620 m =
30100 m = 0.3 m
7 m + 0.3 m = 7.3 m
(c)
1 km = 1000 m
3 km = 3000 m
15 km =
15 x 1000 = 200 m
3
15 km
= 3000 + 200
= 3200 m
(d)
1 kg = 1000 g
4 kg = 4000 g
15 kg =
15 x 1000 = 200 g
4
15 kg
= 4000 + 200
= 4200 g
Answer(s): 185, 7.3, 3200, 4200