Printable Finding the Rule Worksheets

Printable finding the rule worksheets for 3rd through 5th grade, with an answer key on every sheet. The sets below cover 3 different skills, so you can start where your child actually is. Available as ordering activities and sorting activities.

Targeted Practice by Skill

About Finding the Rule

What this skill is

Finding the rule requires analyzing input-output pairs or sequences to determine the single underlying mathematical operation rule (e.g., Rule: Multiply by 3).

When children learn it

Pattern rule identification is taught in 2nd through 5th grade, aligned to 4.OA.C.5.

Teaching Tips

  • Test candidate rules against at least three input-output pairs.
  • State rules clearly using operation and number (e.g., Add 7).

Common Mistakes

  • Stating a rule that works for the first pair but fails on subsequent input-output pairs.
  • Mixing addition and multiplication rules.