Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 13 h = _____ min
- 4 34 m = _____ m (Give the answer in decimal.)
- 5 12 km = _____ m
- 7 12 kg = _____ g
(a)
1 h = 60 min
13 h =
13 x 60 = 20 min
1
13 h = 60 + 20 = 80 min
(b)
34 m =
75100 m = 0.75 m
4 m + 0.75 m = 4.75 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
7 kg = 7000 g
12 kg =
12 x 1000 = 500 g
7
12 kg
= 7000 + 500
= 7500 g
Answer(s): 80, 4.75, 5500, 7500