Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 12 h = _____ min
- 9 220 m = _____ m (Give the answer in decimal.)
- 2 15 km = _____ m
- 9 58 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
2
12 h = 120 + 30 = 150 min
(b)
220 m =
10100 m = 0.1 m
9 m + 0.1 m = 9.1 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
9 kg = 9000 g
58 kg =
58 x 1000 = 625 g
9
58 kg
= 9000 + 625
= 9625 g
Answer(s): 150, 9.1, 2200, 9625