Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 12 h = _____ min
- 7 825 m = _____ m (Give the answer in decimal.)
- 6 15 km = _____ m
- 9 15 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
1
12 h = 60 + 30 = 90 min
(b)
825 m =
32100 m = 0.32 m
7 m + 0.32 m = 7.32 m
(c)
1 km = 1000 m
6 km = 6000 m
15 km =
15 x 1000 = 200 m
6
15 km
= 6000 + 200
= 6200 m
(d)
1 kg = 1000 g
9 kg = 9000 g
15 kg =
15 x 1000 = 200 g
9
15 kg
= 9000 + 200
= 9200 g
Answer(s): 90, 7.32, 6200, 9200