Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 15 h = _____ min
- 5 620 m = _____ m (Give the answer in decimal.)
- 3 14 km = _____ m
- 6 78 kg = _____ g
(a)
1 h = 60 min
15 h =
15 x 60 = 12 min
1
15 h = 60 + 12 = 72 min
(b)
620 m =
30100 m = 0.3 m
5 m + 0.3 m = 5.3 m
(c)
1 km = 1000 m
3 km = 3000 m
14 km =
14 x 1000 = 250 m
3
14 km
= 3000 + 250
= 3250 m
(d)
1 kg = 1000 g
6 kg = 6000 g
78 kg =
78 x 1000 = 875 g
6
78 kg
= 6000 + 875
= 6875 g
Answer(s): 72, 5.3, 3250, 6875