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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 368 · 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 12/30 in its simplest form. =
  2. 2.Is 6/8 in its simplest form? (a) No (b) Yes
  3. 3.Is 6/18 in its simplest form? (a) Yes (b) No
  4. 4.Write 7/21 in its simplest form. =
  5. 5.What is the HCF of 9 and 72?
  6. 6.What is the HCF of 12 and 14?
  7. 7.Is 18/42 in its simplest form? (a) No (b) Yes
  8. 8.Write 21/24 in its simplest form. =
  9. 9.Is 7/8 in its simplest form? (a) Yes (b) No
  10. 10.Is 20/35 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 5 and 35?
  12. 12.Write 7/70 in its simplest form. =
  13. 13.Write 4/10 in its simplest form. =
  14. 14.Is 3/18 in its simplest form? (a) Yes (b) No
  15. 15.Write 20/24 in its simplest form. =
  16. 16.What is the HCF of 18 and 24?
  17. 17.Is 6/42 in its simplest form? (a) No (b) Yes
  18. 18.Write 35/50 in its simplest form. =
  19. 19.What is the HCF of 28 and 63?
  20. 20.Write 16/28 in its simplest form. =
  21. 21.Write 63/72 in its simplest form. =
  22. 22.Is 3/7 in its simplest form? (a) Yes (b) No
  23. 23.Write 5/15 in its simplest form. =
  24. 24.Is 4/10 in its simplest form? (a) Yes (b) No
  25. 25.Write 27/36 in its simplest form. =
  26. 26.Is 8/9 in its simplest form? (a) Yes (b) No
  27. 27.What is the HCF of 25 and 30?
  28. 28.Is 9/21 in its simplest form? (a) No (b) Yes
  29. 29.Is 12/15 in its simplest form? (a) Yes (b) No
  30. 30.Is 3/30 in its simplest form? (a) Yes (b) No
  31. 31.Write 4/6 in its simplest form. =
  32. 32.Is 1/8 in its simplest form? (a) Yes (b) No
  33. 33.Write 12/28 in its simplest form. =
  34. 34.What is the HCF of 5 and 30?
  35. 35.Is 3/10 in its simplest form? (a) No (b) Yes
  36. 36.Write 21/27 in its simplest form. =
  37. 37.Write 9/90 in its simplest form. =
  38. 38.What is the HCF of 5 and 20?
  39. 39.What is the HCF of 27 and 72?
  40. 40.Write 20/28 in its simplest form. =

Answer key

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

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