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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 764 · 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 5 and 10?
  2. 2.Write 72/81 in its simplest form. =
  3. 3.Write 7/21 in its simplest form. =
  4. 4.What is the HCF of 14 and 20?
  5. 5.Is 9/10 in its simplest form? (a) No (b) Yes
  6. 6.Is 42/54 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 15 and 20?
  8. 8.Is 2/9 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 7 and 14?
  10. 10.What is the HCF of 36 and 42?
  11. 11.What is the HCF of 4 and 8?
  12. 12.Is 6/15 in its simplest form? (a) Yes (b) No
  13. 13.Write 5/50 in its simplest form. =
  14. 14.Is 4/20 in its simplest form? (a) No (b) Yes
  15. 15.Write 15/50 in its simplest form. =
  16. 16.Write 45/54 in its simplest form. =
  17. 17.Is 3/10 in its simplest form? (a) Yes (b) No
  18. 18.Is 21/30 in its simplest form? (a) No (b) Yes
  19. 19.Write 12/54 in its simplest form. =
  20. 20.Write 3/21 in its simplest form. =
  21. 21.Write 6/24 in its simplest form. =
  22. 22.Is 1/6 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 5 and 35?
  24. 24.Is 7/8 in its simplest form? (a) Yes (b) No
  25. 25.Write 2/18 in its simplest form. =
  26. 26.Write 32/36 in its simplest form. =
  27. 27.Write 6/16 in its simplest form. =
  28. 28.Is 3/7 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 21 and 24?
  30. 30.What is the HCF of 24 and 32?
  31. 31.Is 10/12 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 3 and 15?
  33. 33.Write 35/45 in its simplest form. =
  34. 34.What is the HCF of 2 and 8?
  35. 35.What is the HCF of 27 and 45?
  36. 36.What is the HCF of 18 and 21?
  37. 37.Is 3/5 in its simplest form? (a) No (b) Yes
  38. 38.Write 14/35 in its simplest form. =
  39. 39.What is the HCF of 6 and 9?
  40. 40.Write 72/80 in its simplest form. =

Answer key

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

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