Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 12 h = _____ min
- 2 25 m = _____ m (Give the answer in decimal.)
- 4 15 km = _____ m
- 8 18 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
3
12 h = 180 + 30 = 210 min
(b)
25 m =
40100 m = 0.4 m
2 m + 0.4 m = 2.4 m
(c)
1 km = 1000 m
4 km = 4000 m
15 km =
15 x 1000 = 200 m
4
15 km
= 4000 + 200
= 4200 m
(d)
1 kg = 1000 g
8 kg = 8000 g
18 kg =
18 x 1000 = 125 g
8
18 kg
= 8000 + 125
= 8125 g
Answer(s): 210, 2.4, 4200, 8125