Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 23 h = _____ min
- 7 250 m = _____ m (Give the answer in decimal.)
- 2 15 km = _____ m
- 8 58 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
1
23 h = 60 + 40 = 100 min
(b)
250 m =
4100 m = 0.04 m
7 m + 0.04 m = 7.04 m
(c)
1 km = 1000 m
2 km = 2000 m
15 km =
15 x 1000 = 200 m
2
15 km
= 2000 + 200
= 2200 m
(d)
1 kg = 1000 g
8 kg = 8000 g
58 kg =
58 x 1000 = 625 g
8
58 kg
= 8000 + 625
= 8625 g
Answer(s): 100, 7.04, 2200, 8625