Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 15 h = _____ min
- 7 420 m = _____ m (Give the answer in decimal.)
- 8 14 km = _____ m
- 8 15 kg = _____ g
(a)
1 h = 60 min
15 h =
15 x 60 = 12 min
3
15 h = 180 + 12 = 192 min
(b)
420 m =
20100 m = 0.2 m
7 m + 0.2 m = 7.2 m
(c)
1 km = 1000 m
8 km = 8000 m
14 km =
14 x 1000 = 250 m
8
14 km
= 8000 + 250
= 8250 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): 192, 7.2, 8250, 8200