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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 603 · 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 20 and 24?
  2. 2.Write 18/30 in its simplest form. =
  3. 3.What is the HCF of 24 and 28?
  4. 4.What is the HCF of 30 and 35?
  5. 5.Is 9/10 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 16 and 18?
  7. 7.Is 3/5 in its simplest form? (a) Yes (b) No
  8. 8.Write 7/49 in its simplest form. =
  9. 9.Is 1/3 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 8 and 64?
  11. 11.Is 1/5 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 8 and 14?
  13. 13.Is 27/30 in its simplest form? (a) Yes (b) No
  14. 14.Is 7/8 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 32 and 40?
  16. 16.What is the HCF of 18 and 63?
  17. 17.What is the HCF of 18 and 42?
  18. 18.What is the HCF of 28 and 40?
  19. 19.Is 3/7 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 12 and 54?
  21. 21.What is the HCF of 6 and 10?
  22. 22.Is 12/14 in its simplest form? (a) No (b) Yes
  23. 23.Is 6/15 in its simplest form? (a) Yes (b) No
  24. 24.Write 9/15 in its simplest form. =
  25. 25.Is 36/42 in its simplest form? (a) No (b) Yes
  26. 26.Is 25/45 in its simplest form? (a) No (b) Yes
  27. 27.Is 5/8 in its simplest form? (a) Yes (b) No
  28. 28.Write 9/12 in its simplest form. =
  29. 29.Write 12/16 in its simplest form. =
  30. 30.Is 4/28 in its simplest form? (a) Yes (b) No
  31. 31.Write 45/63 in its simplest form. =
  32. 32.Write 12/14 in its simplest form. =
  33. 33.Is 3/9 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 8 and 80?
  35. 35.What is the HCF of 20 and 32?
  36. 36.Is 5/6 in its simplest form? (a) Yes (b) No
  37. 37.Write 10/14 in its simplest form. =
  38. 38.What is the HCF of 21 and 30?
  39. 39.Is 1/9 in its simplest form? (a) No (b) Yes
  40. 40.Write 56/72 in its simplest form. =

Answer key

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

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