Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 12 h = _____ min
- 7 720 m = _____ m (Give the answer in decimal.)
- 8 12 km = _____ m
- 6 12 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
1
12 h = 60 + 30 = 90 min
(b)
720 m =
35100 m = 0.35 m
7 m + 0.35 m = 7.35 m
(c)
1 km = 1000 m
8 km = 8000 m
12 km =
12 x 1000 = 500 m
8
12 km
= 8000 + 500
= 8500 m
(d)
1 kg = 1000 g
6 kg = 6000 g
12 kg =
12 x 1000 = 500 g
6
12 kg
= 6000 + 500
= 6500 g
Answer(s): 90, 7.35, 8500, 6500