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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 327 · 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 12/21 in its simplest form. =
  2. 2.What is the HCF of 36 and 81?
  3. 3.What is the HCF of 2 and 8?
  4. 4.Is 6/18 in its simplest form? (a) Yes (b) No
  5. 5.Write 3/30 in its simplest form. =
  6. 6.What is the HCF of 35 and 56?
  7. 7.Write 15/25 in its simplest form. =
  8. 8.Is 36/40 in its simplest form? (a) No (b) Yes
  9. 9.Write 4/10 in its simplest form. =
  10. 10.Is 42/54 in its simplest form? (a) Yes (b) No
  11. 11.Write 35/40 in its simplest form. =
  12. 12.What is the HCF of 6 and 20?
  13. 13.Write 4/36 in its simplest form. =
  14. 14.What is the HCF of 40 and 48?
  15. 15.What is the HCF of 8 and 36?
  16. 16.Write 6/14 in its simplest form. =
  17. 17.Write 15/18 in its simplest form. =
  18. 18.Is 12/30 in its simplest form? (a) Yes (b) No
  19. 19.Write 6/27 in its simplest form. =
  20. 20.What is the HCF of 7 and 14?
  21. 21.What is the HCF of 6 and 8?
  22. 22.Is 1/7 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 28 and 35?
  24. 24.Write 2/4 in its simplest form. =
  25. 25.Is 18/42 in its simplest form? (a) Yes (b) No
  26. 26.Write 30/36 in its simplest form. =
  27. 27.Write 72/80 in its simplest form. =
  28. 28.Is 3/10 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 6 and 9?
  30. 30.What is the HCF of 21 and 30?
  31. 31.Write 9/90 in its simplest form. =
  32. 32.Write 40/56 in its simplest form. =
  33. 33.Write 5/20 in its simplest form. =
  34. 34.Is 5/7 in its simplest form? (a) Yes (b) No
  35. 35.Is 6/36 in its simplest form? (a) Yes (b) No
  36. 36.Write 2/12 in its simplest form. =
  37. 37.Write 12/32 in its simplest form. =
  38. 38.What is the HCF of 25 and 40?
  39. 39.Write 12/28 in its simplest form. =
  40. 40.Write 8/18 in its simplest form. =

Answer key

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

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