Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 23 h = _____ min
- 2 750 m = _____ m (Give the answer in decimal.)
- 2 15 km = _____ m
- 5 18 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
2
23 h = 120 + 40 = 160 min
(b)
750 m =
14100 m = 0.14 m
2 m + 0.14 m = 2.14 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
5 kg = 5000 g
18 kg =
18 x 1000 = 125 g
5
18 kg
= 5000 + 125
= 5125 g
Answer(s): 160, 2.14, 2200, 5125