Worksheets · Pre-Algebra

Percent problems worksheet

There are only three of these, and they are the same relationship with a different piece missing: the part is the percent times the whole. Work out which piece you are missing and the rest follows.

Select your difficulty

Pick more than one for a sheet that mixes them.

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

Sigma Prep · sigmaprep.io/worksheets

Name

Percent Problems

Date Period

Answer each question.

  1. 4 is what percent of 10?
  2. What is 80% of 340?
  3. 102 is what percent of 255?
  4. 132 is what percent of 165?
  5. What is 5% of 145?
  6. What is 5% of 175?
  7. What is 30% of 270?
  8. 3 is what percent of 20?
  9. What is 40% of 285?
  10. 35.25 is what percent of 235?
  11. 45 is 60% of what number?
  12. 82.5 is 30% of what number?
  13. What is 15% of 270?
  14. What is 15% of 150?
  15. 13 is what percent of 260?
  16. What is 5% of 100?
  17. What is 40% of 305?
  18. 204 is what percent of 255?
  19. 36 is 15% of what number?
  20. 196 is 80% of what number?

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

Sigma Prep · sigmaprep.io/worksheets

Name

Percent ProblemsAnswer keyVersion 1

Date Period

Answer each question.

  1. 4 is what percent of 10?40%
  2. What is 80% of 340?272
  3. 102 is what percent of 255?40%
  4. 132 is what percent of 165?80%
  5. What is 5% of 145?7.25
  6. What is 5% of 175?8.75
  7. What is 30% of 270?81
  8. 3 is what percent of 20?15%
  9. What is 40% of 285?114
  10. 35.25 is what percent of 235?15%
  11. 45 is 60% of what number?75
  12. 82.5 is 30% of what number?275
  13. What is 15% of 270?40.5
  14. What is 15% of 150?22.5
  15. 13 is what percent of 260?5%
  16. What is 5% of 100?5
  17. What is 40% of 305?122
  18. 204 is what percent of 255?80%
  19. 36 is 15% of what number?240
  20. 196 is 80% of what number?245

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

How to do these

15 is what percent of 60?

  1. The part is 15 and the whole is 60.
  2. Fifteen over sixty is a quarter.
  3. A quarter is 25 percent.

The answer is 25%.

Where students go wrong

Dividing the wrong way round. The part goes on top and the whole underneath; doing it the other way gives 4, or 400 percent, which should look wrong straight away.

Also called percent of a number, what percent is or finding the whole from a percent.

Questions about these worksheets

Yes. Every percent problems sheet is free to print and free to download as a PDF. There is no account to make, no email to hand over and no limit on how many you take.

Yes. The answer key prints on a second page, and you can choose whether it shows each question beside its answer or just the answers in a list.

Yes. Print straight from the page, or download the PDF and print that. The sheet is laid out for paper rather than squeezed off a screen, so there is room to work under each question, and the answer key comes out on its own page.

Pre-Algebra is usually taken around 7th or 8th grade, though schools vary and plenty of students meet it earlier or later. Pick the difficulty rather than the grade: the easy level suits a first lesson on it, the hard level suits review before a test.

Yes, as many as you like. The questions are built fresh each time rather than picked from a fixed set of files, so pressing Generate gives a new sheet. That is what you want for a second class, a retake, or two students sitting next to each other.

That is the closest comparison, and Kuta Software is good software. It is also paid software you install on a computer. These worksheets run in a browser tab for free, with no account and nothing to install. Like Kuta, the percent problems questions are generated when you ask for them rather than pulled from a fixed set of files, so two classes never get the same sheet, and the answer key comes with it.

Yes. There are two levels, and you can tick more than one for a sheet that mixes them, in which case the questions come out easiest first. The harder levels are not just larger numbers: they ask for something the easy ones do not.

Dividing the wrong way round. The part goes on top and the whole underneath; doing it the other way gives 4, or 400 percent, which should look wrong straight away.