Pass Check: Percentages
Convert, calculate and apply percentages, including increase, decrease and reverse.
Percentage
A fraction out of 100; 'per cent' means 'per hundred'.
Multiplier
The decimal you multiply by to apply a percentage change, e.g. +15% is 1.15, -20% is 0.80.
Percentage increase/decrease
The change in a value divided by the original value, then multiplied by 100.
Reverse percentage
Working backwards from a value after a percentage change to find the original value.
Quick check
Mixed quiz
1. £1750.00 is invested at 5% compound interest per year. Calculate the value after 2 years.
2. A jacket costs £715.00. Its price decreases by 12%. Calculate the new price.
3. Calculate 75% of 160.
4. In a sale, all prices are reduced by 20%. A coat now costs £264.00. Calculate the original price.
5. Calculate 25% of 280.
6. £3750.00 is invested at 3% compound interest per year. Calculate the value after 4 years.
7. A jacket costs £190.00. Its price increases by 15%. Calculate the new price.
8. What is 20% of 50?