Worksheets · Algebra 1

Combining like terms worksheet

Terms combine only when the letter part is identical. Everything else in algebra leans on getting this automatic.

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

Combining Like Terms

Date Period

Simplify each expression.

  1. 12a−8−12−2a
  2. −6p−10p−p+10p
  3. 7b−9+12b+2b
  4. −2m+2−8m−12
  5. −9r+9+12−11r
  6. 12−9−12−2b
  7. 7p−10−2+4p
  8. 4−n+8n+7n
  9. −12+1−12b+11b
  10. 10x−2−7x+4x
  11. 9−4y−12y−4
  12. 5x−10x+7x+5x
  13. 10−8b−4+8b
  14. m+7−1−9
  15. −7−2+b−10
  16. 12b+2b+7b+2b
  17. 7−8b−8b−1
  18. 8x+9−11−10
  19. −2+5v+7v+6
  20. −9r+10r−9r+12r

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

Sigma Prep · sigmaprep.io/worksheets

Name

Combining Like TermsAnswer keyVersion 1

Date Period

Simplify each expression.

  1. 12a−8−12−2a10a−20
  2. −6p−10p−p+10p−7p
  3. 7b−9+12b+2b21b−9
  4. −2m+2−8m−12−10m−10
  5. −9r+9+12−11r−20r+21
  6. 12−9−12−2b−2b−9
  7. 7p−10−2+4p11p−12
  8. 4−n+8n+7n14n+4
  9. −12+1−12b+11b−b−11
  10. 10x−2−7x+4x7x−2
  11. 9−4y−12y−4−16y+5
  12. 5x−10x+7x+5x7x
  13. 10−8b−4+8b6
  14. m+7−1−9m−3
  15. −7−2+b−10b−19
  16. 12b+2b+7b+2b23b
  17. 7−8b−8b−1−16b+6
  18. 8x+9−11−108x−12
  19. −2+5v+7v+612v+4
  20. −9r+10r−9r+12r4r

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

How to do these

4x+3−2x+7

  1. The x terms: 4x - 2x is 2x.
  2. The numbers: 3 + 7 is 10.

The answer is 2x+10.

Where students go wrong

Combining terms that are not alike. 4x + 3 is not 7x, and x squared never joins with x however similar they look. The sign in front of a term belongs to it.

Also called collecting like terms or simplifying expressions.

Questions about these worksheets

Yes. Every combining like terms 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 combining like terms 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 three 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.

Combining terms that are not alike. 4x + 3 is not 7x, and x squared never joins with x however similar they look. The sign in front of a term belongs to it.