Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 900 mℓ as a percentage of 9 ℓ.
- Express 7000 mℓ as a percentage of 1 ℓ.
- Express 60 min as a percentage of 5 hours.
- Express 5 min as a percentage of 40 seconds.
(a)
1 ℓ = 1000 mℓ
9 ℓ = 9000 mℓ
9009000 x 100% = 10%
(b)
7000 mℓ = 7 ℓ
71 x 100% = 700%
(c)
1 h = 60 min
5 h = 300 min
60300 x 100% = 20%
(d)
1 min = 60 seconds
5 min = 300 seconds
30040 x 100% = 750%
Answer(s): 10%, 700%, 20%, 750%