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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 614 · 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 45 and 54?
  2. 2.What is the HCF of 9 and 45?
  3. 3.Is 12/14 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 12 and 27?
  5. 5.What is the HCF of 14 and 16?
  6. 6.What is the HCF of 2 and 18?
  7. 7.What is the HCF of 8 and 10?
  8. 8.What is the HCF of 64 and 72?
  9. 9.Write 4/14 in its simplest form. =
  10. 10.Is 2/7 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 42 and 49?
  12. 12.What is the HCF of 42 and 54?
  13. 13.Is 12/40 in its simplest form? (a) No (b) Yes
  14. 14.Write 28/36 in its simplest form. =
  15. 15.Write 2/10 in its simplest form. =
  16. 16.Write 21/35 in its simplest form. =
  17. 17.Is 4/9 in its simplest form? (a) No (b) Yes
  18. 18.Is 12/20 in its simplest form? (a) Yes (b) No
  19. 19.Write 4/20 in its simplest form. =
  20. 20.Is 16/36 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 18 and 20?
  22. 22.Write 15/50 in its simplest form. =
  23. 23.Write 9/54 in its simplest form. =
  24. 24.Is 5/9 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 6 and 27?
  26. 26.What is the HCF of 10 and 45?
  27. 27.What is the HCF of 8 and 18?
  28. 28.Write 18/20 in its simplest form. =
  29. 29.Is 1/6 in its simplest form? (a) Yes (b) No
  30. 30.Is 20/45 in its simplest form? (a) Yes (b) No
  31. 31.Write 9/72 in its simplest form. =
  32. 32.Is 6/16 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 21 and 56?
  34. 34.Is 3/7 in its simplest form? (a) Yes (b) No
  35. 35.Write 16/56 in its simplest form. =
  36. 36.Write 16/40 in its simplest form. =
  37. 37.Is 15/24 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 10 and 18?
  39. 39.What is the HCF of 28 and 35?
  40. 40.What is the HCF of 9 and 18?

Answer key

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

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