Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 23 h = _____ min
- 2 425 m = _____ m (Give the answer in decimal.)
- 2 12 km = _____ m
- 2 12 kg = _____ g
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
1
23 h = 60 + 40 = 100 min
(b)
425 m =
16100 m = 0.16 m
2 m + 0.16 m = 2.16 m
(c)
1 km = 1000 m
2 km = 2000 m
12 km =
12 x 1000 = 500 m
2
12 km
= 2000 + 500
= 2500 m
(d)
1 kg = 1000 g
2 kg = 2000 g
12 kg =
12 x 1000 = 500 g
2
12 kg
= 2000 + 500
= 2500 g
Answer(s): 100, 2.16, 2500, 2500