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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 465 · 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.Is 4/5 in its simplest form? (a) No (b) Yes
  2. 2.Write 25/45 in its simplest form. =
  3. 3.What is the HCF of 9 and 63?
  4. 4.Write 56/72 in its simplest form. =
  5. 5.What is the HCF of 15 and 35?
  6. 6.What is the HCF of 12 and 28?
  7. 7.Is 2/9 in its simplest form? (a) No (b) Yes
  8. 8.Write 2/8 in its simplest form. =
  9. 9.What is the HCF of 3 and 15?
  10. 10.Write 9/72 in its simplest form. =
  11. 11.What is the HCF of 6 and 18?
  12. 12.Is 7/10 in its simplest form? (a) Yes (b) No
  13. 13.Write 2/12 in its simplest form. =
  14. 14.What is the HCF of 48 and 54?
  15. 15.Write 7/35 in its simplest form. =
  16. 16.Is 15/40 in its simplest form? (a) Yes (b) No
  17. 17.Is 4/6 in its simplest form? (a) Yes (b) No
  18. 18.Is 20/25 in its simplest form? (a) Yes (b) No
  19. 19.Write 45/72 in its simplest form. =
  20. 20.Is 1/8 in its simplest form? (a) Yes (b) No
  21. 21.Is 15/50 in its simplest form? (a) Yes (b) No
  22. 22.Is 6/7 in its simplest form? (a) No (b) Yes
  23. 23.Is 8/10 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 27 and 63?
  25. 25.What is the HCF of 28 and 40?
  26. 26.Is 7/8 in its simplest form? (a) No (b) Yes
  27. 27.Is 3/30 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 24 and 64?
  29. 29.Is 40/45 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 4 and 8?
  31. 31.What is the HCF of 12 and 20?
  32. 32.Is 6/9 in its simplest form? (a) No (b) Yes
  33. 33.Is 1/10 in its simplest form? (a) No (b) Yes
  34. 34.Is 1/3 in its simplest form? (a) No (b) Yes
  35. 35.Write 18/60 in its simplest form. =
  36. 36.Is 8/9 in its simplest form? (a) No (b) Yes
  37. 37.Write 4/20 in its simplest form. =
  38. 38.What is the HCF of 4 and 18?
  39. 39.Write 5/45 in its simplest form. =
  40. 40.Write 14/49 in its simplest form. =

Answer key

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

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