Reverse Percentages

Using a multiplier

• You can use a multiplier to calculate a percentage increase or decrease
• If you are given the final amount and you need to find the original amount, you can divide by the multiplier
• Here are two examples
    * A sweater is reduced in price by 20% in a sale
    * The average temperature increase by 5%

Work it out

• Read percentage questions carefully so you know what information you have been given
• A question might tell you the price after the percentage decrease, so you would need to use reverse percentages

Problem solved

• Plan your answer before you start
• You will need yo do two separate calculations to find both things
• You need to remember to write a conclusion

Examiners report

• Always carry out a common sense check on your calculations