Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 23 h = _____ min
- 7 550 m = _____ m (Give the answer in decimal.)
- 5 12 km = _____ m
- 3 58 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
1
23 h = 60 + 40 = 100 min
(b)
550 m =
10100 m = 0.1 m
7 m + 0.1 m = 7.1 m
(c)
1 km = 1000 m
5 km = 5000 m
12 km =
12 x 1000 = 500 m
5
12 km
= 5000 + 500
= 5500 m
(d)
1 kg = 1000 g
3 kg = 3000 g
58 kg =
58 x 1000 = 625 g
3
58 kg
= 3000 + 625
= 3625 g
Answer(s): 100, 7.1, 5500, 3625