Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 12 h = _____ min
- 9 620 m = _____ m (Give the answer in decimal.)
- 9 14 km = _____ m
- 3 18 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
1
12 h = 60 + 30 = 90 min
(b)
620 m =
30100 m = 0.3 m
9 m + 0.3 m = 9.3 m
(c)
1 km = 1000 m
9 km = 9000 m
14 km =
14 x 1000 = 250 m
9
14 km
= 9000 + 250
= 9250 m
(d)
1 kg = 1000 g
3 kg = 3000 g
18 kg =
18 x 1000 = 125 g
3
18 kg
= 3000 + 125
= 3125 g
Answer(s): 90, 9.3, 9250, 3125