Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 23 h = _____ min
- 7 550 m = _____ m (Give the answer in decimal.)
- 3 14 km = _____ m
- 2 45 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
2
23 h = 120 + 40 = 160 min
(b)
550 m =
10100 m = 0.1 m
7 m + 0.1 m = 7.1 m
(c)
1 km = 1000 m
3 km = 3000 m
14 km =
14 x 1000 = 250 m
3
14 km
= 3000 + 250
= 3250 m
(d)
1 kg = 1000 g
2 kg = 2000 g
45 kg =
45 x 1000 = 800 g
2
45 kg
= 2000 + 800
= 2800 g
Answer(s): 160, 7.1, 3250, 2800