Year 9 Percentages Worksheets | Printable PDFs
Year 9 Percentages worksheets for Year 9 Maths (Key Stage 3). Students aged 13–14 learn how to calculate percentage change, percentage increase and percentage decrease in a variety of contexts. Some students may need to practice finding percentages of amounts, for that, see Year 8 Percentages Worksheets. To work out percentage change use the following formula; Percentage change = (Change ÷ Original value) × 100.
To increase an amount use a percentage multiplier. For example to increase an amount by 25% you would multiply the amount by 1.25 which represents 125% as a decimal. To decrease an amount by 25% you would multiply it by 0.75 which represents 75% as a decimal. Below, students practise finding original values, using percentage multipliers and calculating compound interest.
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Reverse Percentages
Percentage Change
Simple and Compound Interest
For more Percentages Worksheets, see Year 8 Percentages Worksheets
Common Questions about Year 9 Percentages
Why are percentage multipliers useful?
Percentage multipliers allow percentage increases and decreases to be calculated in a single step.What multiplier would be used for a 15% increase?
A 15% increase is equivalent to multiplying by 1.15.How do you calculate percentage change?
Find the difference between the original and new values, divide by the original value, then multiply by 100.
Year 9 Percentages Common Mistakes
Common Mistake 1
Using 0.15 as the multiplier for a 15% increase instead of 1.15.Common Mistake 2
Dividing by the new value instead of the original value when calculating percentage change.Common Mistake 3
Forgetting that a percentage decrease uses a multiplier less than 1.
Percentages Worksheets - Free Worksheets Above
Percentage Multipliers
Percentage Increase and Decrease
Percentage Change