Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 12 h = _____ min
- 5 225 m = _____ m (Give the answer in decimal.)
- 7 12 km = _____ m
- 3 25 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
3
12 h = 180 + 30 = 210 min
(b)
225 m =
8100 m = 0.08 m
5 m + 0.08 m = 5.08 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
3 kg = 3000 g
25 kg =
25 x 1000 = 400 g
3
25 kg
= 3000 + 400
= 3400 g
Answer(s): 210, 5.08, 7500, 3400