Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 kg 1 g = _____ g
- 7 km 60 m = _____ m
- 23 ℓ 42 mℓ = _____ mℓ
- 5 m 9 cm = _____ cm
(a)
1 kg = 1000 g
2 kg 1 g
= 2 x 1000 + 1
= 2000 + 1
= 2001 g
(b)
1 km = 1000 m
7 km 60 m
= 7 x 1000 + 60
= 7000 + 60
= 7060 m
(c)
1 ℓ = 1000 mℓ
23 ℓ 42 mℓ
= 23 x 1000 + 42
= 23000 + 42
= 23042 mℓ
(d)
1 m = 100 cm
5 m 9 cm
= 5 x 100 + 9
= 500 + 9
= 509 cm
Answer(s): 2001, 7060, 23042, 509