Percent increase and decrease worksheets
Increasing and decreasing amounts by a percent, writing multipliers like × 1.15 and × 0.85, and finding the percent change between two amounts.
The last part has word problems with prices, populations and values that rise and fall.
Download the free percent increase and decrease worksheet (PDF)
Percent increase and decrease worksheet
What’s on the worksheet
- 34 questions on percent increase and decrease, sized for US Letter paper
- 2 pages of questions plus an answer key on the last page
- Written for grade 7, matching Common Core 7.RP.A.3
- Name and date lines at the top, and room to show the work
Sample questions from this worksheet
- Increase 50 by 15%
- Decrease 40 by 25%
- Increase 80 by 25%
- Decrease 300 by 40%
- Increase 50 by 25%
- Decrease 80 by 15%
Preview the worksheet and answer key
Make a new percent increase and decrease worksheet
Need another page for extra practice, a retake or a second group in class? The free Mathify Kids test maker builds a fresh percent increase and decrease worksheet with different numbers every time. Choose how many questions, print it with its own answer key, or let your child take it on screen and see the score straight away.
Percent increase and decrease: a worked example (Increase 80 by 15%)
- Find 15% of 80: 10% is 8 and 5% is 4, so 15% is 12.
- Add it on for an increase: 80 + 12 = 92.
- Or use a multiplier: the new amount is 115%, so 80 × 1.15 = 92.
- For a 15% decrease, take it away instead: 80 − 12 = 68, or 80 × 0.85 = 68.
How to use it at home and in class
At home
Talk about real prices: a $2.00 bus fare going up by 5%, or a toy going down by 20% in a sale. Ask for the new price both ways, with two steps and with a multiplier. Ten problems a day works better than a whole sheet at once. Mark them together with the answer key, then ask your child to explain one they got wrong: finding the mistake themselves is where the learning happens.
In class
Use the first row as a warm-up, a full page for independent practice, or five questions as an exit ticket. For a retake or a second group, make a new version with the test maker so every child gets different numbers.
Mistakes to watch for
- Giving the change (12) as the new amount instead of adding or subtracting it.
- Using 0.15 as the multiplier for a 15% increase instead of 1.15.
- Dividing a change by the new amount instead of the starting amount.
What to practice before and after percent increase and decrease
- Before: finding the whole. If this sheet is a struggle, go back a step.
- After: discount and sales tax, once this one is mostly right.
- Learn it first: the percent increase and decrease lesson.
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Questions parents ask
Why doesn’t up 10% and then down 10% get back to the start?
Because the second 10% is taken from a bigger amount. Starting at 100: up 10% is 110, and down 10% of 110 is 99.
What grade is this percent increase and decrease worksheet for?
It is written for grade 7 and matches Common Core standard 7.RP.A.3.
Can I get a different version of this percent increase and decrease worksheet?
Yes. Use the free Mathify Kids test maker to make a new percent increase and decrease worksheet with different numbers every time, with its own answer key.