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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 577 · 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 16/20 in its simplest form? (a) No (b) Yes
  2. 2.Write 27/90 in its simplest form. =
  3. 3.Is 8/28 in its simplest form? (a) Yes (b) No
  4. 4.Is 3/6 in its simplest form? (a) No (b) Yes
  5. 5.Is 4/7 in its simplest form? (a) No (b) Yes
  6. 6.Write 6/48 in its simplest form. =
  7. 7.What is the HCF of 4 and 32?
  8. 8.What is the HCF of 12 and 28?
  9. 9.Write 54/60 in its simplest form. =
  10. 10.Write 42/54 in its simplest form. =
  11. 11.What is the HCF of 12 and 18?
  12. 12.What is the HCF of 21 and 28?
  13. 13.What is the HCF of 6 and 36?
  14. 14.Write 45/54 in its simplest form. =
  15. 15.Is 2/7 in its simplest form? (a) Yes (b) No
  16. 16.Write 18/21 in its simplest form. =
  17. 17.What is the HCF of 18 and 42?
  18. 18.What is the HCF of 15 and 50?
  19. 19.Write 12/54 in its simplest form. =
  20. 20.What is the HCF of 40 and 48?
  21. 21.What is the HCF of 4 and 12?
  22. 22.Write 7/42 in its simplest form. =
  23. 23.What is the HCF of 45 and 72?
  24. 24.Write 12/28 in its simplest form. =
  25. 25.What is the HCF of 5 and 50?
  26. 26.Write 4/8 in its simplest form. =
  27. 27.Is 25/35 in its simplest form? (a) No (b) Yes
  28. 28.Is 20/24 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 15 and 27?
  30. 30.What is the HCF of 9 and 54?
  31. 31.Is 7/9 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 6 and 9?
  33. 33.Write 21/56 in its simplest form. =
  34. 34.Write 42/60 in its simplest form. =
  35. 35.What is the HCF of 24 and 30?
  36. 36.What is the HCF of 45 and 54?
  37. 37.What is the HCF of 9 and 27?
  38. 38.What is the HCF of 6 and 18?
  39. 39.What is the HCF of 27 and 30?
  40. 40.What is the HCF of 9 and 21?

Answer key

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

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