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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 122 · 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 6/10 in its simplest form. =
  2. 2.What is the HCF of 9 and 15?
  3. 3.Write 6/24 in its simplest form. =
  4. 4.What is the HCF of 9 and 63?
  5. 5.Is 21/27 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 9 and 18?
  7. 7.What is the HCF of 18 and 45?
  8. 8.What is the HCF of 10 and 25?
  9. 9.What is the HCF of 4 and 10?
  10. 10.Is 4/10 in its simplest form? (a) No (b) Yes
  11. 11.Is 12/15 in its simplest form? (a) No (b) Yes
  12. 12.Is 18/48 in its simplest form? (a) No (b) Yes
  13. 13.Write 16/72 in its simplest form. =
  14. 14.Write 45/63 in its simplest form. =
  15. 15.Is 5/8 in its simplest form? (a) No (b) Yes
  16. 16.Is 7/8 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 3 and 6?
  18. 18.Write 72/81 in its simplest form. =
  19. 19.Is 4/5 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 8 and 24?
  21. 21.What is the HCF of 28 and 36?
  22. 22.What is the HCF of 12 and 21?
  23. 23.Is 5/6 in its simplest form? (a) Yes (b) No
  24. 24.What is the HCF of 12 and 15?
  25. 25.What is the HCF of 3 and 9?
  26. 26.Write 12/32 in its simplest form. =
  27. 27.Is 2/18 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 32 and 36?
  29. 29.Write 12/15 in its simplest form. =
  30. 30.What is the HCF of 4 and 28?
  31. 31.What is the HCF of 25 and 30?
  32. 32.Write 21/28 in its simplest form. =
  33. 33.Is 6/9 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 2 and 8?
  35. 35.Write 6/20 in its simplest form. =
  36. 36.Write 3/9 in its simplest form. =
  37. 37.What is the HCF of 3 and 30?
  38. 38.What is the HCF of 30 and 36?
  39. 39.Is 6/20 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 15 and 20?

Answer key

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

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