Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 12 h = _____ min
- 3 320 m = _____ m (Give the answer in decimal.)
- 6 12 km = _____ m
- 8 15 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
3
12 h = 180 + 30 = 210 min
(b)
320 m =
15100 m = 0.15 m
3 m + 0.15 m = 3.15 m
(c)
1 km = 1000 m
6 km = 6000 m
12 km =
12 x 1000 = 500 m
6
12 km
= 6000 + 500
= 6500 m
(d)
1 kg = 1000 g
8 kg = 8000 g
15 kg =
15 x 1000 = 200 g
8
15 kg
= 8000 + 200
= 8200 g
Answer(s): 210, 3.15, 6500, 8200