Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 23 h = _____ min
- 2 725 m = _____ m (Give the answer in decimal.)
- 3 14 km = _____ m
- 8 78 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
2
23 h = 120 + 40 = 160 min
(b)
725 m =
28100 m = 0.28 m
2 m + 0.28 m = 2.28 m
(c)
1 km = 1000 m
3 km = 3000 m
14 km =
14 x 1000 = 250 m
3
14 km
= 3000 + 250
= 3250 m
(d)
1 kg = 1000 g
8 kg = 8000 g
78 kg =
78 x 1000 = 875 g
8
78 kg
= 8000 + 875
= 8875 g
Answer(s): 160, 2.28, 3250, 8875