Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 12 h = _____ min
- 8 710 m = _____ m (Give the answer in decimal.)
- 3 12 km = _____ m
- 2 15 kg = _____ g
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
3
12 h = 180 + 30 = 210 min
(b)
710 m =
70100 m = 0.7 m
8 m + 0.7 m = 8.7 m
(c)
1 km = 1000 m
3 km = 3000 m
12 km =
12 x 1000 = 500 m
3
12 km
= 3000 + 500
= 3500 m
(d)
1 kg = 1000 g
2 kg = 2000 g
15 kg =
15 x 1000 = 200 g
2
15 kg
= 2000 + 200
= 2200 g
Answer(s): 210, 8.7, 3500, 2200