Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 23 h = _____ min
- 9 320 m = _____ m (Give the answer in decimal.)
- 7 15 km = _____ m
- 6 12 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
2
23 h = 120 + 40 = 160 min
(b)
320 m =
15100 m = 0.15 m
9 m + 0.15 m = 9.15 m
(c)
1 km = 1000 m
7 km = 7000 m
15 km =
15 x 1000 = 200 m
7
15 km
= 7000 + 200
= 7200 m
(d)
1 kg = 1000 g
6 kg = 6000 g
12 kg =
12 x 1000 = 500 g
6
12 kg
= 6000 + 500
= 6500 g
Answer(s): 160, 9.15, 7200, 6500