Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 23 h = _____ min
- 4 720 m = _____ m (Give the answer in decimal.)
- 4 12 km = _____ m
- 7 12 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
3
23 h = 180 + 40 = 220 min
(b)
720 m =
35100 m = 0.35 m
4 m + 0.35 m = 4.35 m
(c)
1 km = 1000 m
4 km = 4000 m
12 km =
12 x 1000 = 500 m
4
12 km
= 4000 + 500
= 4500 m
(d)
1 kg = 1000 g
7 kg = 7000 g
12 kg =
12 x 1000 = 500 g
7
12 kg
= 7000 + 500
= 7500 g
Answer(s): 220, 4.35, 4500, 7500