Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 12 h = _____ min
- 4 24 m = _____ m (Give the answer in decimal.)
- 9 15 km = _____ m
- 6 25 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
3
12 h = 180 + 30 = 210 min
(b)
24 m =
50100 m = 0.5 m
4 m + 0.5 m = 4.5 m
(c)
1 km = 1000 m
9 km = 9000 m
15 km =
15 x 1000 = 200 m
9
15 km
= 9000 + 200
= 9200 m
(d)
1 kg = 1000 g
6 kg = 6000 g
25 kg =
25 x 1000 = 400 g
6
25 kg
= 6000 + 400
= 6400 g
Answer(s): 210, 4.5, 9200, 6400