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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 305 · 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 6 and 10?
  2. 2.Is 5/6 in its simplest form? (a) No (b) Yes
  3. 3.Write 72/81 in its simplest form. =
  4. 4.Write 12/28 in its simplest form. =
  5. 5.Is 1/10 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 27 and 63?
  7. 7.What is the HCF of 35 and 40?
  8. 8.What is the HCF of 45 and 50?
  9. 9.What is the HCF of 24 and 56?
  10. 10.Write 6/18 in its simplest form. =
  11. 11.Is 4/7 in its simplest form? (a) No (b) Yes
  12. 12.Write 2/4 in its simplest form. =
  13. 13.Write 10/45 in its simplest form. =
  14. 14.What is the HCF of 24 and 30?
  15. 15.What is the HCF of 32 and 72?
  16. 16.Write 42/60 in its simplest form. =
  17. 17.What is the HCF of 16 and 20?
  18. 18.Write 36/40 in its simplest form. =
  19. 19.Is 2/20 in its simplest form? (a) Yes (b) No
  20. 20.Write 36/63 in its simplest form. =
  21. 21.Write 9/15 in its simplest form. =
  22. 22.Is 25/35 in its simplest form? (a) Yes (b) No
  23. 23.Write 6/54 in its simplest form. =
  24. 24.Is 48/54 in its simplest form? (a) No (b) Yes
  25. 25.Write 14/16 in its simplest form. =
  26. 26.What is the HCF of 32 and 40?
  27. 27.What is the HCF of 2 and 20?
  28. 28.Is 8/14 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 4 and 24?
  30. 30.Write 6/42 in its simplest form. =
  31. 31.What is the HCF of 9 and 12?
  32. 32.Is 2/7 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 4 and 6?
  34. 34.Write 30/36 in its simplest form. =
  35. 35.Is 6/60 in its simplest form? (a) Yes (b) No
  36. 36.Is 2/3 in its simplest form? (a) Yes (b) No
  37. 37.Write 21/28 in its simplest form. =
  38. 38.What is the HCF of 3 and 21?
  39. 39.Write 40/56 in its simplest form. =
  40. 40.What is the HCF of 7 and 28?

Answer key

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

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