Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 15 h = _____ min
- 5 650 m = _____ m (Give the answer in decimal.)
- 6 12 km = _____ m
- 5 45 kg = _____ g
(a)
1 h = 60 min
15 h =
15 x 60 = 12 min
1
15 h = 60 + 12 = 72 min
(b)
650 m =
12100 m = 0.12 m
5 m + 0.12 m = 5.12 m
(c)
1 km = 1000 m
6 km = 6000 m
12 km =
12 x 1000 = 500 m
6
12 km
= 6000 + 500
= 6500 m
(d)
1 kg = 1000 g
5 kg = 5000 g
45 kg =
45 x 1000 = 800 g
5
45 kg
= 5000 + 800
= 5800 g
Answer(s): 72, 5.12, 6500, 5800