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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 212 · 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 28/40 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 63 and 72?
  3. 3.What is the HCF of 27 and 90?
  4. 4.Is 12/42 in its simplest form? (a) Yes (b) No
  5. 5.Is 1/7 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 36 and 81?
  7. 7.Write 9/21 in its simplest form. =
  8. 8.Write 7/35 in its simplest form. =
  9. 9.Write 24/27 in its simplest form. =
  10. 10.Is 4/6 in its simplest form? (a) Yes (b) No
  11. 11.Write 16/28 in its simplest form. =
  12. 12.Write 6/10 in its simplest form. =
  13. 13.What is the HCF of 6 and 16?
  14. 14.Write 25/30 in its simplest form. =
  15. 15.Is 12/18 in its simplest form? (a) No (b) Yes
  16. 16.Write 49/63 in its simplest form. =
  17. 17.Write 10/18 in its simplest form. =
  18. 18.Is 8/10 in its simplest form? (a) Yes (b) No
  19. 19.Write 2/14 in its simplest form. =
  20. 20.What is the HCF of 2 and 4?
  21. 21.Write 4/10 in its simplest form. =
  22. 22.Write 24/42 in its simplest form. =
  23. 23.Write 2/18 in its simplest form. =
  24. 24.Write 28/63 in its simplest form. =
  25. 25.Is 15/40 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 6 and 14?
  27. 27.What is the HCF of 18 and 60?
  28. 28.Write 2/16 in its simplest form. =
  29. 29.Is 3/6 in its simplest form? (a) Yes (b) No
  30. 30.Write 21/24 in its simplest form. =
  31. 31.Write 9/45 in its simplest form. =
  32. 32.Write 16/40 in its simplest form. =
  33. 33.Is 35/40 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 7 and 14?
  35. 35.Write 28/40 in its simplest form. =
  36. 36.What is the HCF of 25 and 35?
  37. 37.Is 1/3 in its simplest form? (a) No (b) Yes
  38. 38.Is 3/7 in its simplest form? (a) Yes (b) No
  39. 39.Is 5/8 in its simplest form? (a) Yes (b) No
  40. 40.Write 45/63 in its simplest form. =

Answer key

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

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