Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 12 h = _____ min
- 5 250 m = _____ m (Give the answer in decimal.)
- 5 15 km = _____ m
- 5 12 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
3
12 h = 180 + 30 = 210 min
(b)
250 m =
4100 m = 0.04 m
5 m + 0.04 m = 5.04 m
(c)
1 km = 1000 m
5 km = 5000 m
15 km =
15 x 1000 = 200 m
5
15 km
= 5000 + 200
= 5200 m
(d)
1 kg = 1000 g
5 kg = 5000 g
12 kg =
12 x 1000 = 500 g
5
12 kg
= 5000 + 500
= 5500 g
Answer(s): 210, 5.04, 5200, 5500