Grade 7–9Common Core style · Math: algebra
Pre-Algebra Worksheets — Free Printable with Answer Key
Combine like terms and simplify algebraic expressions — the core of pre-algebra.
A ready worksheet is waiting below — print it as is or change the settings.
Step 1 of 4
Choose a topic
Your choices
- Exercise type
- Simplify expressions
- Grade
- 7 (ages 12–13)
- Difficulty
- Easy
- Number of tasks
- 20
- Task format
- Calculations
- Paper size
- US Letter
Your choices
- Exercise type
- Simplify expressions
- Grade
- 7 (ages 12–13)
- Difficulty
- Easy
- Number of tasks
- 20
- Task format
- Calculations
- Paper size
- US Letter
More options
More options
Topics on this worksheet
Areas on this sheet
- Algebra · 20
Simplify expressions · Grade 7
Name: ____________________Simplify: 4x + 4y − 8x + 2y + 5 =
Simplify: 9x + 5y − 6x − 6y + 3 =
Simplify: 9x + 4y + 2y + 5 =
Simplify: 4x + y − 2x − 3y + 7 =
Simplify: 3x + 2y + 4x + 2y + 2 =
Simplify: 5x + 6y − 7x + 6y + 5 =
Simplify: 2x + 3y − 7x + 2y + 4 =
Simplify: 6x + 5y + 4y + 1 =
Simplify: 3x + 3y − 8x + 6y + 9 =
Simplify: 9x + 3y − 2x + 6y + 5 =
Simplify: 9x + 2y + 3y + 12 =
Simplify: 8x + y − 3x − 3y + 7 =
Simplify: 5x + 3y + 5x − 2y + 4 =
Simplify: 3x + 6y − 7x − 4y + 12 =
Simplify: 2x + 5y + x + y + 7 =
Simplify: 5x + 4y + 7x − 6y + 8 =
Simplify: 4x + 6y + 9x − 2y + 11 =
Simplify: 5x + 5y − x − y + 12 =
Simplify: 3x + 3y + 3x − 3y + 8 =
Simplify: 2x + 4y − 9x + 3y + 7 =
Answer key
- 1. −4x + 6y + 5
- 2. 3x − y + 3
- 3. 9x + 6y + 5
- 4. 2x − 2y + 7
- 5. 7x + 4y + 2
- 6. −2x + 12y + 5
- 7. −5x + 5y + 4
- 8. 6x + 9y + 1
- 9. −5x + 9y + 9
- 10. 7x + 9y + 5
- 11. 9x + 5y + 12
- 12. 5x − 2y + 7
- 13. 10x + y + 4
- 14. −4x + 2y + 12
- 15. 3x + 6y + 7
- 16. 12x − 2y + 8
- 17. 13x + 4y + 11
- 18. 4x + 4y + 12
- 19. 6x + 8
- 20. −7x + 7y + 7
How to use the tool
- Pick a difficulty: easy, medium or hard.
- Choose how many problems you want (10, 20 or 30).
- Print or save as PDF. “Create new version” gives brand-new problems with the same settings.
About this generator
Pre-algebra (usually 7th grade) teaches students to work with variables. These sheets practice combining like terms with positive and negative coefficients. Every sheet has a separate answer key calculated by the website, so answers always match the problems. Free, no sign-up, US Letter by default.
Popular uses
- Pre-algebra units
- Homework
- Bell ringers
- Algebra 1 readiness
Plan a useful printable
Start with one clear learning goal and choose only the settings that support it. A short, focused sheet is often easier to explain, complete and review than a crowded page. The live preview makes it possible to check spacing, task count and difficulty before paper is used. Create another version when a class needs the same skill with different content.
Adapt it to the learner
Use fewer items, larger writing areas and familiar content for beginners. Increase the amount, range or complexity gradually for confident learners. Teachers can also combine the printable with oral instructions, pair work or a short follow-up discussion. Because every page is customizable, the same activity can support a warm-up, independent practice, homework or revision.
Print clearly and reuse
Choose A4 or US Letter to match the printer, then print at 100 percent whenever exact spacing matters. The PDF option uses the browser print dialog and creates a clean file for later use. Generated content is prepared in the browser, requires no pupil account and has no watermark. Review every sheet before sharing it, especially when you add your own words or text.
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Frequently asked questions
- How do I pick the right level?
- Choose an age or grade in step 2. Start easier if the pupil is unsure – you can switch anytime and get new problems instantly.
- Can I see the problems before printing?
- Yes. The sheet shows exactly the problems that will print. Click New problems to swap them.
- How do I include an answer key?
- Turn on Answer key in the last step. It prints on its own page after the problems, with the same numbering.
- What does the question mark next to a problem do?
- It opens a step-by-step explanation of the method on screen. It is not printed and does not reveal the answer.
- What is combining like terms?
- Adding terms with the same variable: 3x − 5x = −2x.
- What comes after pre-algebra?
- Algebra 1, usually in 8th or 9th grade — see the Algebra 1 page.