Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 800 mℓ as a percentage of 8 ℓ.
- Express 2000 mℓ as a percentage of 1 ℓ.
- Express 60 min as a percentage of 4 hours.
- Express 7 min as a percentage of 80 seconds.
(a)
1 ℓ = 1000 mℓ
8 ℓ = 8000 mℓ
8008000 x 100% = 10%
(b)
2000 mℓ = 2 ℓ
21 x 100% = 200%
(c)
1 h = 60 min
4 h = 240 min
60240 x 100% = 25%
(d)
1 min = 60 seconds
7 min = 420 seconds
42080 x 100% = 525%
Answer(s): 10%, 200%, 25%, 525%