Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 23 h = _____ min
- 3 120 m = _____ m (Give the answer in decimal.)
- 9 14 km = _____ m
- 5 12 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
1
23 h = 60 + 40 = 100 min
(b)
120 m =
5100 m = 0.05 m
3 m + 0.05 m = 3.05 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
5 kg = 5000 g
12 kg =
12 x 1000 = 500 g
5
12 kg
= 5000 + 500
= 5500 g
Answer(s): 100, 3.05, 9250, 5500