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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 261 · 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 42 and 60?
  2. 2.Is 8/9 in its simplest form? (a) Yes (b) No
  3. 3.Is 1/2 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 8 and 16?
  5. 5.Is 3/10 in its simplest form? (a) Yes (b) No
  6. 6.Is 1/9 in its simplest form? (a) Yes (b) No
  7. 7.Is 2/9 in its simplest form? (a) No (b) Yes
  8. 8.Is 7/9 in its simplest form? (a) No (b) Yes
  9. 9.Is 7/8 in its simplest form? (a) Yes (b) No
  10. 10.Write 6/8 in its simplest form. =
  11. 11.Write 9/45 in its simplest form. =
  12. 12.Write 7/70 in its simplest form. =
  13. 13.Write 8/20 in its simplest form. =
  14. 14.Write 14/20 in its simplest form. =
  15. 15.Is 15/40 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 54 and 60?
  17. 17.What is the HCF of 21 and 49?
  18. 18.Is 7/10 in its simplest form? (a) Yes (b) No
  19. 19.Is 2/7 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 8 and 32?
  21. 21.What is the HCF of 15 and 40?
  22. 22.Is 6/14 in its simplest form? (a) Yes (b) No
  23. 23.Is 5/40 in its simplest form? (a) No (b) Yes
  24. 24.Is 6/15 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 15 and 35?
  26. 26.Is 18/24 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 9 and 30?
  28. 28.Write 3/21 in its simplest form. =
  29. 29.Write 9/54 in its simplest form. =
  30. 30.Is 2/3 in its simplest form? (a) Yes (b) No
  31. 31.Is 10/35 in its simplest form? (a) Yes (b) No
  32. 32.Write 2/20 in its simplest form. =
  33. 33.Write 21/49 in its simplest form. =
  34. 34.What is the HCF of 81 and 90?
  35. 35.Is 6/24 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 35 and 45?
  37. 37.What is the HCF of 8 and 56?
  38. 38.What is the HCF of 9 and 21?
  39. 39.What is the HCF of 16 and 72?
  40. 40.Is 1/6 in its simplest form? (a) No (b) Yes

Answer key

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

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