Printable Expressions with Variables Worksheets

Printable expressions with variables worksheets for 5th grade, with an answer key on every sheet. The sets below cover 7 different skills, so you can start where your child actually is. Available as speed drills, matching, and visual guides.

Targeted Practice by Skill

About Expressions with Variables

What this skill is

Expressions with variables teaches evaluating algebraic expressions by substituting numerical values for letter variables (e.g., evaluate 3x + 2 when x = 4 -> 3(4) + 2 = 14).

When children learn it

Algebraic expressions are introduced in 4th and 5th grade, aligned to 5.OA.A.2.

Teaching Tips

  • Use parentheses around substituted variable values: 3(4) + 2.
  • Follow PEMDAS rules when evaluating expression steps.

Common Mistakes

  • Writing 34 instead of 3x4 when substituting 4 for x in 3x.
  • Ignoring order of operations when evaluating expressions.

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