Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 15 h = _____ min
- 4 750 m = _____ m (Give the answer in decimal.)
- 3 15 km = _____ m
- 8 25 kg = _____ g
(a)
1 h = 60 min
15 h =
15 x 60 = 12 min
1
15 h = 60 + 12 = 72 min
(b)
750 m =
14100 m = 0.14 m
4 m + 0.14 m = 4.14 m
(c)
1 km = 1000 m
3 km = 3000 m
15 km =
15 x 1000 = 200 m
3
15 km
= 3000 + 200
= 3200 m
(d)
1 kg = 1000 g
8 kg = 8000 g
25 kg =
25 x 1000 = 400 g
8
25 kg
= 8000 + 400
= 8400 g
Answer(s): 72, 4.14, 3200, 8400