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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 89 · 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.Is 18/42 in its simplest form? (a) Yes (b) No
  2. 2.Write 2/20 in its simplest form. =
  3. 3.Write 20/36 in its simplest form. =
  4. 4.Write 18/63 in its simplest form. =
  5. 5.Write 6/30 in its simplest form. =
  6. 6.What is the HCF of 30 and 35?
  7. 7.Is 7/10 in its simplest form? (a) Yes (b) No
  8. 8.Write 40/56 in its simplest form. =
  9. 9.Is 2/5 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 6 and 36?
  11. 11.What is the HCF of 12 and 21?
  12. 12.Write 12/54 in its simplest form. =
  13. 13.Is 2/4 in its simplest form? (a) No (b) Yes
  14. 14.Is 21/30 in its simplest form? (a) Yes (b) No
  15. 15.Is 16/36 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 27 and 90?
  17. 17.Is 6/7 in its simplest form? (a) No (b) Yes
  18. 18.Is 12/28 in its simplest form? (a) No (b) Yes
  19. 19.Write 8/64 in its simplest form. =
  20. 20.Is 14/18 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 56 and 63?
  22. 22.What is the HCF of 5 and 30?
  23. 23.Is 1/3 in its simplest form? (a) Yes (b) No
  24. 24.What is the HCF of 21 and 27?
  25. 25.What is the HCF of 10 and 14?
  26. 26.Is 8/14 in its simplest form? (a) Yes (b) No
  27. 27.Write 12/15 in its simplest form. =
  28. 28.Is 4/9 in its simplest form? (a) No (b) Yes
  29. 29.Is 18/24 in its simplest form? (a) Yes (b) No
  30. 30.Write 36/42 in its simplest form. =
  31. 31.Write 7/14 in its simplest form. =
  32. 32.Write 21/30 in its simplest form. =
  33. 33.Write 4/18 in its simplest form. =
  34. 34.Write 20/35 in its simplest form. =
  35. 35.Is 6/54 in its simplest form? (a) No (b) Yes
  36. 36.Write 4/14 in its simplest form. =
  37. 37.Is 16/20 in its simplest form? (a) Yes (b) No
  38. 38.Is 2/9 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 20 and 32?
  40. 40.Write 28/36 in its simplest form. =

Answer key

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

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