Printable Factors of a Number Worksheets

Printable factors of a number worksheets for 4th grade, with an answer key on every sheet. The sets below cover 4 different skills, so you can start where your child actually is. Available as speed drills, visual guides, and word problems.

Targeted Practice by Skill

About Factors of a Number

What this skill is

Factors of a number finds all whole numbers that divide evenly into a target number without a remainder (e.g., factors of 12 are 1, 2, 3, 4, 6, 12), organized in factor rainbows.

When children learn it

Finding factors is taught in 3rd through 5th grade, aligned to Common Core standard 4.OA.B.4.

Teaching Tips

  • List factors in systematic pairs starting from 1 (1x12, 2x6, 3x4).
  • Connect factor pairs with arched factor rainbow lines.

Common Mistakes

  • Omitting middle factor pairs when listing factors.
  • Confusing factors (smaller divisors) with multiples (larger products).