Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 12 h = _____ min
- 6 620 m = _____ m (Give the answer in decimal.)
- 2 12 km = _____ m
- 9 12 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
3
12 h = 180 + 30 = 210 min
(b)
620 m =
30100 m = 0.3 m
6 m + 0.3 m = 6.3 m
(c)
1 km = 1000 m
2 km = 2000 m
12 km =
12 x 1000 = 500 m
2
12 km
= 2000 + 500
= 2500 m
(d)
1 kg = 1000 g
9 kg = 9000 g
12 kg =
12 x 1000 = 500 g
9
12 kg
= 9000 + 500
= 9500 g
Answer(s): 210, 6.3, 2500, 9500