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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 472 · 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 35 and 49?
  2. 2.Write 20/35 in its simplest form. =
  3. 3.Write 25/45 in its simplest form. =
  4. 4.Write 8/18 in its simplest form. =
  5. 5.Write 9/36 in its simplest form. =
  6. 6.What is the HCF of 56 and 72?
  7. 7.Write 28/35 in its simplest form. =
  8. 8.What is the HCF of 5 and 50?
  9. 9.Write 14/20 in its simplest form. =
  10. 10.Write 18/21 in its simplest form. =
  11. 11.Is 4/9 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 63 and 72?
  13. 13.Write 3/30 in its simplest form. =
  14. 14.Write 15/27 in its simplest form. =
  15. 15.Is 4/5 in its simplest form? (a) No (b) Yes
  16. 16.Is 2/3 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 3 and 9?
  18. 18.Is 4/18 in its simplest form? (a) Yes (b) No
  19. 19.Is 1/5 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 8 and 10?
  21. 21.Write 5/15 in its simplest form. =
  22. 22.What is the HCF of 10 and 35?
  23. 23.Is 9/12 in its simplest form? (a) Yes (b) No
  24. 24.Write 9/72 in its simplest form. =
  25. 25.What is the HCF of 63 and 81?
  26. 26.What is the HCF of 8 and 12?
  27. 27.Write 12/21 in its simplest form. =
  28. 28.Is 3/5 in its simplest form? (a) No (b) Yes
  29. 29.Write 10/45 in its simplest form. =
  30. 30.Write 2/14 in its simplest form. =
  31. 31.What is the HCF of 6 and 27?
  32. 32.Is 2/8 in its simplest form? (a) Yes (b) No
  33. 33.Is 1/2 in its simplest form? (a) Yes (b) No
  34. 34.Is 2/16 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 9 and 45?
  36. 36.What is the HCF of 7 and 70?
  37. 37.What is the HCF of 14 and 16?
  38. 38.Write 36/40 in its simplest form. =
  39. 39.Write 12/18 in its simplest form. =
  40. 40.Write 12/15 in its simplest form. =

Answer key

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

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