Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 12 h = _____ min
- 5 450 m = _____ m (Give the answer in decimal.)
- 2 14 km = _____ m
- 9 34 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
1
12 h = 60 + 30 = 90 min
(b)
450 m =
8100 m = 0.08 m
5 m + 0.08 m = 5.08 m
(c)
1 km = 1000 m
2 km = 2000 m
14 km =
14 x 1000 = 250 m
2
14 km
= 2000 + 250
= 2250 m
(d)
1 kg = 1000 g
9 kg = 9000 g
34 kg =
34 x 1000 = 750 g
9
34 kg
= 9000 + 750
= 9750 g
Answer(s): 90, 5.08, 2250, 9750