Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 13 h = _____ min
- 5 220 m = _____ m (Give the answer in decimal.)
- 2 15 km = _____ m
- 9 25 kg = _____ g
(a)
1 h = 60 min
13 h =
13 x 60 = 20 min
1
13 h = 60 + 20 = 80 min
(b)
220 m =
10100 m = 0.1 m
5 m + 0.1 m = 5.1 m
(c)
1 km = 1000 m
2 km = 2000 m
15 km =
15 x 1000 = 200 m
2
15 km
= 2000 + 200
= 2200 m
(d)
1 kg = 1000 g
9 kg = 9000 g
25 kg =
25 x 1000 = 400 g
9
25 kg
= 9000 + 400
= 9400 g
Answer(s): 80, 5.1, 2200, 9400