Worksheets · Algebra 1

Algebra 1 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. A town's population went from 390 to 273. What is the percent decrease?
  3. What is 0.6% of 140?
  4. A student measured 74 cm. The true value is 80 cm. Find the percent error.
  5. What is 30% of 95?
  6. 35 of 70 people in a survey prefer cheese pizza. What percent is that?
  7. What is 0.6% of 92?
  8. A student measured 12 mL. The true value is 18 mL. Find the percent error, to the nearest tenth of a percent.
  9. What is 60% of 110?
  10. 12 of 240 people in a survey prefer cheese pizza. What percent is that?
  11. What is 0.25% of 232?
  12. A student measured 50 cm. The true value is 38 cm. Find the percent error, to the nearest tenth of a percent.
  13. What is 60% of 60?
  14. 27 of 135 people in a survey prefer cheese pizza. What percent is that?
  15. What is 0.6% of 188?
  16. A student measured 12 mL. The true value is 13 mL. Find the percent error, to the nearest tenth of a percent.
  17. 72 is 80% of what number?
  18. A town's population went from 190 to 133. What is the percent decrease?
  19. What is 0.1% of 296?
  20. A student measured 68 in. The true value is 57 in. Find the percent error, to the nearest tenth of a percent.

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. A town's population went from 390 to 273. What is the percent decrease?30%
  3. What is 0.6% of 140?0.84
  4. A student measured 74 cm. The true value is 80 cm. Find the percent error.7.5%
  5. What is 30% of 95?28.5
  6. 35 of 70 people in a survey prefer cheese pizza. What percent is that?50%
  7. What is 0.6% of 92?0.552
  8. A student measured 12 mL. The true value is 18 mL. Find the percent error, to the nearest tenth of a percent.33.3%
  9. What is 60% of 110?66
  10. 12 of 240 people in a survey prefer cheese pizza. What percent is that?5%
  11. What is 0.25% of 232?0.58
  12. A student measured 50 cm. The true value is 38 cm. Find the percent error, to the nearest tenth of a percent.31.6%
  13. What is 60% of 60?36
  14. 27 of 135 people in a survey prefer cheese pizza. What percent is that?20%
  15. What is 0.6% of 188?1.128
  16. A student measured 12 mL. The true value is 13 mL. Find the percent error, to the nearest tenth of a percent.7.7%
  17. 72 is 80% of what number?90
  18. A town's population went from 190 to 133. What is the percent decrease?30%
  19. What is 0.1% of 296?0.296
  20. A student measured 68 in. The true value is 57 in. Find the percent error, to the nearest tenth of a percent.19.3%

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.

What you can put on this worksheet

The three percent questions
What is 25% of 80? → 20
Word problems
33 of 44 people in a survey prefer cheese pizza. What percent is that? → 75%
Percents under 1%
What is 0.2% of 180? → 0.36
Percent error
A student measured 53 mL. The true value is 50 mL. Find the percent error. → 6%

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.

Algebra 1 is usually taken around 8th or 9th 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.

You pick from 4: the three percent questions, word problems, percents under 1% and percent error. Tick as many as you want and set how many of each, or let it spread them evenly.

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.