Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 23 h = _____ min
- 2 525 m = _____ m (Give the answer in decimal.)
- 2 12 km = _____ m
- 7 14 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
2
23 h = 120 + 40 = 160 min
(b)
525 m =
20100 m = 0.2 m
2 m + 0.2 m = 2.2 m
(c)
1 km = 1000 m
2 km = 2000 m
12 km =
12 x 1000 = 500 m
2
12 km
= 2000 + 500
= 2500 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): 160, 2.2, 2500, 7250