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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 390 · 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 15/18 in its simplest form? (a) No (b) Yes
  3. 3.Write 6/14 in its simplest form. =
  4. 4.What is the HCF of 2 and 20?
  5. 5.Write 49/70 in its simplest form. =
  6. 6.What is the HCF of 42 and 60?
  7. 7.Is 20/35 in its simplest form? (a) Yes (b) No
  8. 8.Is 5/7 in its simplest form? (a) Yes (b) No
  9. 9.Is 2/4 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 28 and 35?
  11. 11.What is the HCF of 4 and 10?
  12. 12.Write 12/32 in its simplest form. =
  13. 13.Write 8/80 in its simplest form. =
  14. 14.What is the HCF of 3 and 6?
  15. 15.What is the HCF of 12 and 40?
  16. 16.Is 7/9 in its simplest form? (a) Yes (b) No
  17. 17.Write 2/18 in its simplest form. =
  18. 18.What is the HCF of 18 and 27?
  19. 19.Is 4/24 in its simplest form? (a) Yes (b) No
  20. 20.Write 5/45 in its simplest form. =
  21. 21.Write 8/12 in its simplest form. =
  22. 22.What is the HCF of 2 and 16?
  23. 23.What is the HCF of 14 and 21?
  24. 24.Write 6/8 in its simplest form. =
  25. 25.What is the HCF of 30 and 35?
  26. 26.Write 21/28 in its simplest form. =
  27. 27.What is the HCF of 3 and 21?
  28. 28.Is 8/14 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 2 and 10?
  30. 30.What is the HCF of 6 and 24?
  31. 31.Write 36/81 in its simplest form. =
  32. 32.Is 3/6 in its simplest form? (a) Yes (b) No
  33. 33.Write 28/49 in its simplest form. =
  34. 34.Write 24/80 in its simplest form. =
  35. 35.What is the HCF of 8 and 14?
  36. 36.Is 24/42 in its simplest form? (a) No (b) Yes
  37. 37.Write 16/72 in its simplest form. =
  38. 38.Is 6/27 in its simplest form? (a) Yes (b) No
  39. 39.Is 8/10 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 4 and 12?

Answer key

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

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