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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 957 · 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.Write 21/28 in its simplest form. =
  2. 2.What is the HCF of 4 and 16?
  3. 3.Write 4/20 in its simplest form. =
  4. 4.Write 9/18 in its simplest form. =
  5. 5.What is the HCF of 18 and 63?
  6. 6.Is 7/10 in its simplest form? (a) No (b) Yes
  7. 7.Is 36/40 in its simplest form? (a) No (b) Yes
  8. 8.Write 27/30 in its simplest form. =
  9. 9.Is 5/40 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 42 and 49?
  11. 11.What is the HCF of 20 and 32?
  12. 12.Write 15/21 in its simplest form. =
  13. 13.Write 8/64 in its simplest form. =
  14. 14.Is 3/8 in its simplest form? (a) Yes (b) No
  15. 15.Is 9/10 in its simplest form? (a) No (b) Yes
  16. 16.Is 8/14 in its simplest form? (a) No (b) Yes
  17. 17.Is 3/7 in its simplest form? (a) Yes (b) No
  18. 18.Write 27/45 in its simplest form. =
  19. 19.Is 20/36 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 16 and 18?
  21. 21.Write 24/56 in its simplest form. =
  22. 22.What is the HCF of 24 and 64?
  23. 23.Write 63/72 in its simplest form. =
  24. 24.Write 2/10 in its simplest form. =
  25. 25.Write 14/20 in its simplest form. =
  26. 26.Is 12/30 in its simplest form? (a) No (b) Yes
  27. 27.Is 2/9 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 20 and 25?
  29. 29.What is the HCF of 9 and 45?
  30. 30.Write 9/15 in its simplest form. =
  31. 31.What is the HCF of 9 and 18?
  32. 32.Write 16/20 in its simplest form. =
  33. 33.Is 8/28 in its simplest form? (a) Yes (b) No
  34. 34.Is 8/36 in its simplest form? (a) Yes (b) No
  35. 35.Is 6/8 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 15 and 20?
  37. 37.What is the HCF of 6 and 27?
  38. 38.Write 2/18 in its simplest form. =
  39. 39.Write 8/80 in its simplest form. =
  40. 40.Write 6/42 in its simplest form. =

Answer key

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

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