Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 12 h = _____ min
- 5 320 m = _____ m (Give the answer in decimal.)
- 7 15 km = _____ m
- 7 14 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
1
12 h = 60 + 30 = 90 min
(b)
320 m =
15100 m = 0.15 m
5 m + 0.15 m = 5.15 m
(c)
1 km = 1000 m
7 km = 7000 m
15 km =
15 x 1000 = 200 m
7
15 km
= 7000 + 200
= 7200 m
(d)
1 kg = 1000 g
7 kg = 7000 g
14 kg =
14 x 1000 = 250 g
7
14 kg
= 7000 + 250
= 7250 g
Answer(s): 90, 5.15, 7200, 7250