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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 697 · 40 questions
TalentJR

The method (Divide by the HCF): Find the HCF (highest common factor) of the top and the bottom. Divide the top and the bottom by the HCF. If the HCF is 1, the fraction is already in its simplest form.

NameDateTime takenScore ___ / 40
  1. 1.Write 20/36 in its simplest form. =
  2. 2.What is the HCF of 81 and 90?
  3. 3.Write 27/72 in its simplest form. =
  4. 4.Write 4/12 in its simplest form. =
  5. 5.Write 18/30 in its simplest form. =
  6. 6.Is 6/54 in its simplest form? (a) No (b) Yes
  7. 7.Write 4/28 in its simplest form. =
  8. 8.Is 7/10 in its simplest form? (a) No (b) Yes
  9. 9.Is 10/12 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 64 and 72?
  11. 11.Write 21/35 in its simplest form. =
  12. 12.What is the HCF of 24 and 27?
  13. 13.What is the HCF of 36 and 40?
  14. 14.Is 9/10 in its simplest form? (a) No (b) Yes
  15. 15.Is 35/45 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 27 and 36?
  17. 17.Write 35/45 in its simplest form. =
  18. 18.Write 10/45 in its simplest form. =
  19. 19.Write 12/42 in its simplest form. =
  20. 20.Write 15/35 in its simplest form. =
  21. 21.Write 16/56 in its simplest form. =
  22. 22.Is 3/9 in its simplest form? (a) No (b) Yes
  23. 23.Write 12/32 in its simplest form. =
  24. 24.What is the HCF of 15 and 27?
  25. 25.Write 8/36 in its simplest form. =
  26. 26.What is the HCF of 3 and 9?
  27. 27.What is the HCF of 4 and 12?
  28. 28.Write 4/18 in its simplest form. =
  29. 29.Write 16/72 in its simplest form. =
  30. 30.Is 6/16 in its simplest form? (a) No (b) Yes
  31. 31.Write 12/54 in its simplest form. =
  32. 32.Write 12/14 in its simplest form. =
  33. 33.What is the HCF of 72 and 81?
  34. 34.Write 2/6 in its simplest form. =
  35. 35.Write 56/72 in its simplest form. =
  36. 36.Write 48/54 in its simplest form. =
  37. 37.What is the HCF of 9 and 72?
  38. 38.Write 5/20 in its simplest form. =
  39. 39.What is the HCF of 7 and 42?
  40. 40.Write 27/63 in its simplest form. =

Answer key

  1. 5/9
  2. 9
  3. 3/8
  4. 1/3
  5. 3/5
  6. No
  7. 1/7
  8. Yes
  9. No
  10. 8
  11. 3/5
  12. 3
  13. 4
  14. Yes
  15. No
  16. 9
  17. 7/9
  18. 2/9
  19. 2/7
  20. 3/7
  21. 2/7
  22. No
  23. 3/8
  24. 3
  25. 2/9
  26. 3
  27. 4
  28. 2/9
  29. 2/9
  30. No
  31. 2/9
  32. 6/7
  33. 9
  34. 1/3
  35. 7/9
  36. 8/9
  37. 9
  38. 1/4
  39. 7
  40. 3/7

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