Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 13 h = _____ min
- 4 220 m = _____ m (Give the answer in decimal.)
- 2 15 km = _____ m
- 7 58 kg = _____ g
(a)
1 h = 60 min
13 h =
13 x 60 = 20 min
2
13 h = 120 + 20 = 140 min
(b)
220 m =
10100 m = 0.1 m
4 m + 0.1 m = 4.1 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
7 kg = 7000 g
58 kg =
58 x 1000 = 625 g
7
58 kg
= 7000 + 625
= 7625 g
Answer(s): 140, 4.1, 2200, 7625