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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 399 · 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 28 and 36?
  2. 2.What is the HCF of 63 and 72?
  3. 3.What is the HCF of 18 and 27?
  4. 4.Write 9/18 in its simplest form. =
  5. 5.Is 1/2 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 4 and 28?
  7. 7.Is 1/9 in its simplest form? (a) No (b) Yes
  8. 8.Is 6/7 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 3 and 21?
  10. 10.Write 10/18 in its simplest form. =
  11. 11.What is the HCF of 35 and 45?
  12. 12.What is the HCF of 32 and 56?
  13. 13.Is 9/15 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 42 and 54?
  15. 15.Is 2/8 in its simplest form? (a) Yes (b) No
  16. 16.Is 3/10 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 5 and 35?
  18. 18.Write 15/27 in its simplest form. =
  19. 19.Is 6/27 in its simplest form? (a) Yes (b) No
  20. 20.Write 10/12 in its simplest form. =
  21. 21.Is 5/8 in its simplest form? (a) Yes (b) No
  22. 22.Is 3/21 in its simplest form? (a) Yes (b) No
  23. 23.Is 15/24 in its simplest form? (a) Yes (b) No
  24. 24.Write 6/24 in its simplest form. =
  25. 25.Write 9/27 in its simplest form. =
  26. 26.What is the HCF of 3 and 12?
  27. 27.What is the HCF of 18 and 20?
  28. 28.What is the HCF of 4 and 12?
  29. 29.Write 30/35 in its simplest form. =
  30. 30.What is the HCF of 4 and 16?
  31. 31.Write 12/18 in its simplest form. =
  32. 32.Write 6/16 in its simplest form. =
  33. 33.What is the HCF of 9 and 63?
  34. 34.Write 4/12 in its simplest form. =
  35. 35.What is the HCF of 9 and 18?
  36. 36.Write 4/40 in its simplest form. =
  37. 37.Write 9/45 in its simplest form. =
  38. 38.What is the HCF of 3 and 9?
  39. 39.What is the HCF of 20 and 45?
  40. 40.Write 63/72 in its simplest form. =

Answer key

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

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