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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 394 · 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.Is 15/20 in its simplest form? (a) No (b) Yes
  2. 2.Is 2/5 in its simplest form? (a) No (b) Yes
  3. 3.Write 5/40 in its simplest form. =
  4. 4.Is 1/4 in its simplest form? (a) No (b) Yes
  5. 5.Write 10/12 in its simplest form. =
  6. 6.What is the HCF of 16 and 36?
  7. 7.What is the HCF of 12 and 30?
  8. 8.What is the HCF of 48 and 56?
  9. 9.Write 63/81 in its simplest form. =
  10. 10.Write 9/12 in its simplest form. =
  11. 11.Write 20/28 in its simplest form. =
  12. 12.What is the HCF of 40 and 45?
  13. 13.Is 6/7 in its simplest form? (a) No (b) Yes
  14. 14.Write 42/48 in its simplest form. =
  15. 15.Is 6/8 in its simplest form? (a) No (b) Yes
  16. 16.Is 1/8 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 56 and 80?
  18. 18.What is the HCF of 15 and 50?
  19. 19.Write 6/30 in its simplest form. =
  20. 20.Write 9/21 in its simplest form. =
  21. 21.What is the HCF of 3 and 6?
  22. 22.What is the HCF of 16 and 40?
  23. 23.What is the HCF of 5 and 35?
  24. 24.Is 1/3 in its simplest form? (a) Yes (b) No
  25. 25.Write 8/24 in its simplest form. =
  26. 26.Is 7/8 in its simplest form? (a) Yes (b) No
  27. 27.What is the HCF of 40 and 64?
  28. 28.Is 3/21 in its simplest form? (a) No (b) Yes
  29. 29.Is 8/28 in its simplest form? (a) No (b) Yes
  30. 30.Is 9/15 in its simplest form? (a) Yes (b) No
  31. 31.Write 45/81 in its simplest form. =
  32. 32.Write 8/72 in its simplest form. =
  33. 33.What is the HCF of 6 and 30?
  34. 34.Write 6/15 in its simplest form. =
  35. 35.Is 9/24 in its simplest form? (a) Yes (b) No
  36. 36.Is 8/9 in its simplest form? (a) No (b) Yes
  37. 37.Is 1/2 in its simplest form? (a) No (b) Yes
  38. 38.Write 45/63 in its simplest form. =
  39. 39.Is 6/14 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 8 and 24?

Answer key

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

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