Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 14 h = _____ min
- 4 45 m = _____ m (Give the answer in decimal.)
- 5 15 km = _____ m
- 8 12 kg = _____ g
(a)
1 h = 60 min
14 h =
14 x 60 = 15 min
1
14 h = 60 + 15 = 75 min
(b)
45 m =
80100 m = 0.8 m
4 m + 0.8 m = 4.8 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
8 kg = 8000 g
12 kg =
12 x 1000 = 500 g
8
12 kg
= 8000 + 500
= 8500 g
Answer(s): 75, 4.8, 5200, 8500