FreeMath
Grade 5medium

Simplifying Fractions Quiz

Reducing fractions to simplest form depends on quickly spotting the greatest common factor of the numerator and denominator. This quiz mixes easy GCFs (2, 3) with harder ones (5, 6) so your fifth grader has to actually look at each problem rather than dividing by 2 every time. Strong scores here usually mean your child is ready to start the bigger fraction operations — adding and subtracting unlike denominators, multiplying mixed numbers — without getting tripped up on simplification at the end.

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All 20 Practice Problems

Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.

  1. 1.Simplify 12/27 (format: N/D)
  2. 2.Simplify 8/14 (format: N/D)
  3. 3.Simplify 15/27 (format: N/D)
  4. 4.Simplify 6/24 (format: N/D)
  5. 5.Simplify 24/54 (format: N/D)
  6. 6.Simplify 15/40 (format: N/D)
  7. 7.Simplify 30/48 (format: N/D)
  8. 8.Simplify 15/21 (format: N/D)
  9. 9.Simplify 16/36 (format: N/D)
  10. 10.Simplify 4/16 (format: N/D)
  11. 11.Simplify 15/24 (format: N/D)
  12. 12.Simplify 24/30 (format: N/D)
  13. 13.Simplify 5/10 (format: N/D)
  14. 14.Simplify 2/10 (format: N/D)
  15. 15.Simplify 8/12 (format: N/D)
  16. 16.Simplify 12/54 (format: N/D)
  17. 17.Simplify 12/21 (format: N/D)
  18. 18.Simplify 12/30 (format: N/D)
  19. 19.Simplify 20/32 (format: N/D)
  20. 20.Simplify 20/24 (format: N/D)
Show answer key
  1. 1.Simplify 12/27 (format: N/D) Answer: 4/9
  2. 2.Simplify 8/14 (format: N/D) Answer: 4/7
  3. 3.Simplify 15/27 (format: N/D) Answer: 5/9
  4. 4.Simplify 6/24 (format: N/D) Answer: 1/4
  5. 5.Simplify 24/54 (format: N/D) Answer: 4/9
  6. 6.Simplify 15/40 (format: N/D) Answer: 3/8
  7. 7.Simplify 30/48 (format: N/D) Answer: 5/8
  8. 8.Simplify 15/21 (format: N/D) Answer: 5/7
  9. 9.Simplify 16/36 (format: N/D) Answer: 4/9
  10. 10.Simplify 4/16 (format: N/D) Answer: 1/4
  11. 11.Simplify 15/24 (format: N/D) Answer: 5/8
  12. 12.Simplify 24/30 (format: N/D) Answer: 4/5
  13. 13.Simplify 5/10 (format: N/D) Answer: 1/2
  14. 14.Simplify 2/10 (format: N/D) Answer: 1/5
  15. 15.Simplify 8/12 (format: N/D) Answer: 2/3
  16. 16.Simplify 12/54 (format: N/D) Answer: 2/9
  17. 17.Simplify 12/21 (format: N/D) Answer: 4/7
  18. 18.Simplify 12/30 (format: N/D) Answer: 2/5
  19. 19.Simplify 20/32 (format: N/D) Answer: 5/8
  20. 20.Simplify 20/24 (format: N/D) Answer: 5/6

Want more practice? See all Grade 5 practice →