Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 112 h = _____ min
- 3 810 m = _____ m (Give the answer in decimal.)
- 5 12 km = _____ m
- 5 18 kg = _____ g
(a)
1 h = 60 min
112 h =
112 x 60 = 5 min
1
112 h = 60 + 5 = 65 min
(b)
810 m =
80100 m = 0.8 m
3 m + 0.8 m = 3.8 m
(c)
1 km = 1000 m
5 km = 5000 m
12 km =
12 x 1000 = 500 m
5
12 km
= 5000 + 500
= 5500 m
(d)
1 kg = 1000 g
5 kg = 5000 g
18 kg =
18 x 1000 = 125 g
5
18 kg
= 5000 + 125
= 5125 g
Answer(s): 65, 3.8, 5500, 5125