Simplifying fractions worksheets with answer keys

Reducing fractions to lowest terms by finding the greatest common factor. Grades 4-6. Every sheet prints with a matching answer key, and every sheet is generated fresh — so you can hand out a different one each time without writing it yourself.

Generate a simplifying fractions worksheet →

What the problems look like

Three real examples at each difficulty, with answers.

Easy

• Simplify: 15/21 = → 5/7
• Simplify: 14/10 = → 7/5
• Simplify: 10/10 = → 1

Generate a full easy simplifying fractions worksheet →

Medium

• Simplify: 30/65 = → 6/13
• Simplify: 8/8 = → 1
• Simplify: 45/33 = → 15/11

Generate a full medium simplifying fractions worksheet →

Hard

• Simplify: 154/210 = → 11/15
• Simplify: 144/120 = → 6/5
• Simplify: 144/72 = → 2

Generate a full hard simplifying fractions worksheet →

How to use it

• Pick a difficulty above and hit generate — you get 20 problems instantly.
• Toggle the answer key on or off before you print.
• Hit “New problems” for a completely different sheet on the same skill.
• Every sheet has a permanent link, so you can reprint the exact same one next year.
• No signup, no ads on the printout. Pro ($19) raises the cap to 60 problems and prints A–F differentiated versions in one go.

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