Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 12 h = _____ min
- 6 820 m = _____ m (Give the answer in decimal.)
- 6 15 km = _____ m
- 3 38 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
3
12 h = 180 + 30 = 210 min
(b)
820 m =
40100 m = 0.4 m
6 m + 0.4 m = 6.4 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
3 kg = 3000 g
38 kg =
38 x 1000 = 375 g
3
38 kg
= 3000 + 375
= 3375 g
Answer(s): 210, 6.4, 6200, 3375