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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 336 · 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 45/81 in its simplest form. =
  2. 2.Is 5/45 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 5 and 50?
  4. 4.What is the HCF of 2 and 6?
  5. 5.Write 8/36 in its simplest form. =
  6. 6.Write 18/42 in its simplest form. =
  7. 7.Is 21/27 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 35 and 49?
  9. 9.What is the HCF of 7 and 56?
  10. 10.Is 2/5 in its simplest form? (a) No (b) Yes
  11. 11.Is 10/35 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 28 and 35?
  13. 13.Is 4/40 in its simplest form? (a) No (b) Yes
  14. 14.Is 5/8 in its simplest form? (a) No (b) Yes
  15. 15.Is 6/8 in its simplest form? (a) Yes (b) No
  16. 16.Write 25/40 in its simplest form. =
  17. 17.Is 8/9 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 9 and 18?
  19. 19.Is 4/5 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 32 and 56?
  21. 21.What is the HCF of 12 and 32?
  22. 22.Is 42/54 in its simplest form? (a) No (b) Yes
  23. 23.Is 2/3 in its simplest form? (a) Yes (b) No
  24. 24.Is 6/36 in its simplest form? (a) No (b) Yes
  25. 25.Is 1/5 in its simplest form? (a) No (b) Yes
  26. 26.Write 45/72 in its simplest form. =
  27. 27.Write 5/15 in its simplest form. =
  28. 28.Write 30/36 in its simplest form. =
  29. 29.Write 6/18 in its simplest form. =
  30. 30.What is the HCF of 42 and 49?
  31. 31.Is 42/48 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 6 and 12?
  33. 33.What is the HCF of 15 and 21?
  34. 34.What is the HCF of 21 and 27?
  35. 35.What is the HCF of 4 and 40?
  36. 36.What is the HCF of 36 and 40?
  37. 37.Write 14/35 in its simplest form. =
  38. 38.Is 16/28 in its simplest form? (a) No (b) Yes
  39. 39.Write 42/49 in its simplest form. =
  40. 40.What is the HCF of 15 and 35?

Answer key

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

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