Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 13 h = _____ min
- 4 210 m = _____ m (Give the answer in decimal.)
- 7 12 km = _____ m
- 4 14 kg = _____ g
(a)
1 h = 60 min
13 h =
13 x 60 = 20 min
2
13 h = 120 + 20 = 140 min
(b)
210 m =
20100 m = 0.2 m
4 m + 0.2 m = 4.2 m
(c)
1 km = 1000 m
7 km = 7000 m
12 km =
12 x 1000 = 500 m
7
12 km
= 7000 + 500
= 7500 m
(d)
1 kg = 1000 g
4 kg = 4000 g
14 kg =
14 x 1000 = 250 g
4
14 kg
= 4000 + 250
= 4250 g
Answer(s): 140, 4.2, 7500, 4250