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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 564 · 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 30/42 in its simplest form. =
  2. 2.Is 15/40 in its simplest form? (a) No (b) Yes
  3. 3.Write 56/63 in its simplest form. =
  4. 4.Is 6/18 in its simplest form? (a) No (b) Yes
  5. 5.Is 25/45 in its simplest form? (a) Yes (b) No
  6. 6.Write 14/49 in its simplest form. =
  7. 7.Write 6/27 in its simplest form. =
  8. 8.Write 18/45 in its simplest form. =
  9. 9.Is 6/16 in its simplest form? (a) Yes (b) No
  10. 10.Write 28/40 in its simplest form. =
  11. 11.Write 8/64 in its simplest form. =
  12. 12.Is 4/8 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 45 and 63?
  14. 14.Is 7/8 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 6 and 54?
  16. 16.Write 4/12 in its simplest form. =
  17. 17.What is the HCF of 15 and 18?
  18. 18.Write 72/81 in its simplest form. =
  19. 19.Write 6/48 in its simplest form. =
  20. 20.Is 1/5 in its simplest form? (a) No (b) Yes
  21. 21.Is 3/15 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 2 and 6?
  23. 23.What is the HCF of 5 and 40?
  24. 24.Is 2/18 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 15 and 27?
  26. 26.Is 1/7 in its simplest form? (a) Yes (b) No
  27. 27.Is 8/18 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 8 and 14?
  29. 29.What is the HCF of 24 and 56?
  30. 30.Write 5/50 in its simplest form. =
  31. 31.Write 9/90 in its simplest form. =
  32. 32.What is the HCF of 6 and 15?
  33. 33.Write 15/20 in its simplest form. =
  34. 34.Is 24/28 in its simplest form? (a) Yes (b) No
  35. 35.What is the HCF of 28 and 36?
  36. 36.What is the HCF of 36 and 45?
  37. 37.Is 4/32 in its simplest form? (a) No (b) Yes
  38. 38.Write 40/48 in its simplest form. =
  39. 39.What is the HCF of 63 and 81?
  40. 40.Is 30/36 in its simplest form? (a) Yes (b) No

Answer key

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

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