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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 604 · 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.What is the HCF of 15 and 20?
  2. 2.Is 1/2 in its simplest form? (a) No (b) Yes
  3. 3.Is 2/7 in its simplest form? (a) Yes (b) No
  4. 4.Write 27/45 in its simplest form. =
  5. 5.Is 3/10 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 8 and 40?
  7. 7.Is 14/20 in its simplest form? (a) No (b) Yes
  8. 8.Write 10/12 in its simplest form. =
  9. 9.Write 64/72 in its simplest form. =
  10. 10.What is the HCF of 14 and 20?
  11. 11.Is 3/4 in its simplest form? (a) Yes (b) No
  12. 12.Is 4/5 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 24 and 42?
  14. 14.What is the HCF of 56 and 64?
  15. 15.Is 6/36 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 6 and 15?
  17. 17.What is the HCF of 9 and 54?
  18. 18.Write 15/20 in its simplest form. =
  19. 19.What is the HCF of 15 and 21?
  20. 20.Is 1/7 in its simplest form? (a) Yes (b) No
  21. 21.Write 35/45 in its simplest form. =
  22. 22.What is the HCF of 21 and 24?
  23. 23.Write 7/14 in its simplest form. =
  24. 24.Is 1/3 in its simplest form? (a) Yes (b) No
  25. 25.Is 5/8 in its simplest form? (a) Yes (b) No
  26. 26.Is 5/9 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 6 and 27?
  28. 28.Write 6/21 in its simplest form. =
  29. 29.Write 35/50 in its simplest form. =
  30. 30.Write 56/80 in its simplest form. =
  31. 31.Write 8/56 in its simplest form. =
  32. 32.Write 18/63 in its simplest form. =
  33. 33.Write 5/35 in its simplest form. =
  34. 34.What is the HCF of 4 and 24?
  35. 35.What is the HCF of 40 and 45?
  36. 36.Is 7/8 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 15 and 18?
  38. 38.Write 16/18 in its simplest form. =
  39. 39.What is the HCF of 5 and 45?
  40. 40.Write 9/90 in its simplest form. =

Answer key

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

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