Use this page when you want 6th grade evaluating expressions worksheets in the next thirty seconds: choose how many problems you want, press print, and the answer key comes out on its own page behind the worksheet. The version loaded below opens with items in the shape of Evaluate 5x + 2 when x = 7 → and Evaluate 9x + 7 when x = 6 →; the key lists 37 and 61 next to their question numbers.
‘New set of problems’ opens the generator in its own tab. There you can change the problem count and turn the answer key on or off. ‘Print or save as PDF’ opens the print dialog — choose Save as PDF in the printer list to keep the file. The sheet fits US Letter and A4, and the answer key prints on its own page.
A one-step equation asks what value makes the two sides balance. Solving Evaluate 5x + 2 when x = 7 → gives 37, and the method — undo the operation on both sides — is the foundation of everything algebraic that follows.
This sheet uses coefficients to 9 and values of x to 9, so the arithmetic never gets in the way of the reasoning.
The equals sign is a statement of balance, not an instruction to compute. Children who carry the primary-school reading of it into algebra struggle here first.
Checking is trivial and almost always skipped: substitute the answer back and see whether the two sides really are equal.
Work of this kind is commonly aligned with the expressions and equations strand for grade 6; schools outside the US meet the same skill at roughly the same age, which is why these 6th grade evaluating expressions worksheets travel well.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | Evaluate 5x + 2 when x = 7 → | 37 | Watch for: operating on one side only |
| 2 | Evaluate 9x + 7 when x = 6 → | 61 | Check: using the same operation instead of the inverse |
| 3 | Evaluate 6x + 2 when x = 4 → | 26 | Look at: not substituting back |
| 4 | Evaluate 4x + 12 when x = 2 → | 20 | Ask about: dividing when the variable is added, not multiplied |
| 5 | Evaluate 4x + 7 when x = 9 → | 43 | Watch for: solving by inspection and getting lucky |
| 6 | Evaluate 2x + 12 when x = 3 → | 18 | Check: losing a negative sign in the rearrangement |
Work Evaluate 4x + 12 when x = 2 → out loud as a demonstration. It gives 20. Children who hear Evaluate 4x + 12 when x = 2 → reasoned through once at the start of a session make noticeably fewer errors in the ten minutes that follow.
Here is one worked through. Evaluate 9x + 7 when x = 6 → gives 61. If your child arrives somewhere other than 61 on Evaluate 9x + 7 when x = 6 →, look at the working rather than the answer: nearly every wrong result comes from a skipped step, not an unknown fact.
The answer key is generated with the worksheet, not written by hand, so it always matches the sheet in front of you — Evaluate 5x + 2 when x = 7 → is listed as 37, Evaluate 9x + 7 when x = 6 → as 61, and so on down the page.
Answers appear next to their question numbers, so a wrong item like Evaluate 9x + 7 when x = 6 → can be found in the key in a second and re-worked while it is still fresh.
To save these 6th grade evaluating expressions worksheets instead of printing them, choose 'Save as PDF' in the printer list. You get the worksheet and the answer key as a single PDF, on Letter or A4 depending on your printer settings.
If the problems look cramped, drop the count from 20 to a smaller number before printing these 6th grade evaluating expressions worksheets; the font stays the same size and the spacing opens up.
Print a sheet of 6th grade evaluating expressions worksheets, run it for 12 minutes, mark it together, and come back tomorrow for a different set of numbers on the same skill.
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Free printable math worksheets from a working math academy director in Korea. Problems come from our own code, not from a published workbook. Every sheet prints on US Letter or A4 with its answer key. All worksheets · Worksheet generator · Korean site
Last updated: 2026-09-13