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Percentage Practice Worksheet
Practise ten percentage problems, check numeric answers in your browser, reveal worked solutions and print a blank or answer-key worksheet.
Ten percentage problems to practise
Work through the questions before using the answer key. Enter a number without a % sign; a leading + or minus sign is accepted. Answers within 0.005 of the exact value are accepted. Use the blank print version for a classroom or independent practice session. No score or answers leave your browser.
A printable name field is provided below; names and answers are not submitted.
1. What is 20% of 150?
2. 18 is what percentage of 60?
3. 45 is 15% of what whole?
4. Increase 80 by 25%. What is the final value?
5. Decrease 250 by 12%. What is the final value?
6. Find the signed percentage change from 80 to 100.
7. A value is 120 after a 20% increase. What was the original?
8. A value is 72 after a 10% decrease. What was the original?
9. Find the percentage difference between 80 and 120.
10. Find the signed percentage change from 120 down to 90.
Check answers when ready. Changing an answer clears the previous score.
Printing shows blank answer lines for practice, even when you typed answers on screen. To print solutions as well, explicitly select the answer-key option.
Practise first, then check your answers
The exercises above cover percent of a quantity, part versus whole, percent increase and decrease, undoing a known-rate adjustment, and directional change versus unsigned difference. Enter numeric answers without the percent symbol. Negative answers are permitted where the signed direction is downward.
Print options
The print layout deliberately leaves answer lines blank. Enable Include the worked answer key in the printed copy only when a solutions sheet is needed. Your typed answers and score are kept in this browser tab and are not submitted.
Check the denominator before dividing; a change from zero has no defined relative percentage. A percentage-point change is a direct subtraction between two percentages, not a percent-change calculation.
Sources and references
- OpenStax Elementary Algebra 2e — 3.2 Solve Percent ApplicationsOpenStax, Rice University