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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 52 · 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 4 and 18?
  2. 2.Is 4/7 in its simplest form? (a) No (b) Yes
  3. 3.Write 6/20 in its simplest form. =
  4. 4.Write 15/35 in its simplest form. =
  5. 5.Write 10/12 in its simplest form. =
  6. 6.Is 5/6 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 30 and 36?
  8. 8.What is the HCF of 42 and 48?
  9. 9.Is 15/20 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 24 and 40?
  11. 11.What is the HCF of 18 and 81?
  12. 12.Is 3/10 in its simplest form? (a) No (b) Yes
  13. 13.Is 12/32 in its simplest form? (a) Yes (b) No
  14. 14.Write 12/40 in its simplest form. =
  15. 15.Is 18/21 in its simplest form? (a) No (b) Yes
  16. 16.Is 2/9 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 6 and 10?
  18. 18.Write 28/36 in its simplest form. =
  19. 19.Is 2/4 in its simplest form? (a) No (b) Yes
  20. 20.Is 1/2 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 12 and 30?
  22. 22.Write 7/42 in its simplest form. =
  23. 23.Is 3/7 in its simplest form? (a) Yes (b) No
  24. 24.Write 18/20 in its simplest form. =
  25. 25.Write 30/36 in its simplest form. =
  26. 26.Write 8/12 in its simplest form. =
  27. 27.Write 3/21 in its simplest form. =
  28. 28.Write 16/72 in its simplest form. =
  29. 29.Write 6/24 in its simplest form. =
  30. 30.Is 18/24 in its simplest form? (a) Yes (b) No
  31. 31.Write 20/25 in its simplest form. =
  32. 32.Is 6/54 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 6 and 21?
  34. 34.What is the HCF of 6 and 48?
  35. 35.Write 63/90 in its simplest form. =
  36. 36.What is the HCF of 45 and 72?
  37. 37.What is the HCF of 18 and 60?
  38. 38.Is 10/45 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 35 and 42?
  40. 40.Write 6/10 in its simplest form. =

Answer key

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

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