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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 291 · 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 45 and 50?
  2. 2.What is the HCF of 3 and 27?
  3. 3.What is the HCF of 9 and 54?
  4. 4.Write 6/8 in its simplest form. =
  5. 5.Is 1/2 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 12 and 27?
  7. 7.Write 48/56 in its simplest form. =
  8. 8.Write 4/8 in its simplest form. =
  9. 9.Write 16/20 in its simplest form. =
  10. 10.Is 3/7 in its simplest form? (a) No (b) Yes
  11. 11.Is 12/16 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 9 and 36?
  13. 13.Is 18/48 in its simplest form? (a) Yes (b) No
  14. 14.Is 5/6 in its simplest form? (a) No (b) Yes
  15. 15.Write 20/32 in its simplest form. =
  16. 16.Is 3/4 in its simplest form? (a) Yes (b) No
  17. 17.Write 9/27 in its simplest form. =
  18. 18.What is the HCF of 63 and 70?
  19. 19.What is the HCF of 18 and 30?
  20. 20.Write 9/18 in its simplest form. =
  21. 21.Write 56/72 in its simplest form. =
  22. 22.Is 10/16 in its simplest form? (a) Yes (b) No
  23. 23.Write 12/28 in its simplest form. =
  24. 24.Write 8/20 in its simplest form. =
  25. 25.Is 2/20 in its simplest form? (a) Yes (b) No
  26. 26.Write 7/70 in its simplest form. =
  27. 27.Write 28/49 in its simplest form. =
  28. 28.What is the HCF of 14 and 21?
  29. 29.Write 36/40 in its simplest form. =
  30. 30.Is 9/30 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 35 and 56?
  32. 32.Is 4/8 in its simplest form? (a) No (b) Yes
  33. 33.Is 6/7 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 14 and 18?
  35. 35.Write 40/48 in its simplest form. =
  36. 36.What is the HCF of 15 and 27?
  37. 37.Write 6/14 in its simplest form. =
  38. 38.What is the HCF of 28 and 36?
  39. 39.Is 30/35 in its simplest form? (a) No (b) Yes
  40. 40.Write 18/21 in its simplest form. =

Answer key

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

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