Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 23 h = _____ min
- 5 25 m = _____ m (Give the answer in decimal.)
- 6 15 km = _____ m
- 8 14 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
1
23 h = 60 + 40 = 100 min
(b)
25 m =
40100 m = 0.4 m
5 m + 0.4 m = 5.4 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
8 kg = 8000 g
14 kg =
14 x 1000 = 250 g
8
14 kg
= 8000 + 250
= 8250 g
Answer(s): 100, 5.4, 6200, 8250