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Simplest Form Fractions Worksheet

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

Answer key

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

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