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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 456 · 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.What is the HCF of 21 and 30?
  2. 2.Is 1/2 in its simplest form? (a) No (b) Yes
  3. 3.Is 4/5 in its simplest form? (a) Yes (b) No
  4. 4.Is 30/42 in its simplest form? (a) Yes (b) No
  5. 5.Is 4/7 in its simplest form? (a) Yes (b) No
  6. 6.Write 21/56 in its simplest form. =
  7. 7.What is the HCF of 21 and 24?
  8. 8.What is the HCF of 20 and 24?
  9. 9.Write 21/28 in its simplest form. =
  10. 10.Is 3/9 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 40 and 64?
  12. 12.Is 6/27 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 27 and 30?
  14. 14.Is 8/9 in its simplest form? (a) Yes (b) No
  15. 15.Write 28/35 in its simplest form. =
  16. 16.Write 8/28 in its simplest form. =
  17. 17.What is the HCF of 8 and 12?
  18. 18.Write 40/64 in its simplest form. =
  19. 19.Write 10/12 in its simplest form. =
  20. 20.What is the HCF of 64 and 72?
  21. 21.Is 12/27 in its simplest form? (a) No (b) Yes
  22. 22.Is 12/30 in its simplest form? (a) No (b) Yes
  23. 23.Write 12/27 in its simplest form. =
  24. 24.Write 25/45 in its simplest form. =
  25. 25.What is the HCF of 7 and 28?
  26. 26.What is the HCF of 36 and 45?
  27. 27.What is the HCF of 10 and 25?
  28. 28.Write 6/30 in its simplest form. =
  29. 29.Is 3/21 in its simplest form? (a) Yes (b) No
  30. 30.Is 20/35 in its simplest form? (a) Yes (b) No
  31. 31.Write 3/9 in its simplest form. =
  32. 32.Write 3/6 in its simplest form. =
  33. 33.Is 5/15 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 8 and 36?
  35. 35.Is 1/10 in its simplest form? (a) Yes (b) No
  36. 36.Write 4/28 in its simplest form. =
  37. 37.Write 64/72 in its simplest form. =
  38. 38.What is the HCF of 18 and 81?
  39. 39.Write 30/48 in its simplest form. =
  40. 40.Is 16/20 in its simplest form? (a) No (b) Yes

Answer key

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

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