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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 163 · 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 35/45 in its simplest form. =
  2. 2.What is the HCF of 2 and 10?
  3. 3.What is the HCF of 9 and 45?
  4. 4.Is 10/45 in its simplest form? (a) Yes (b) No
  5. 5.Write 6/20 in its simplest form. =
  6. 6.Is 4/28 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 21 and 24?
  8. 8.Write 72/81 in its simplest form. =
  9. 9.Is 20/36 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 35 and 42?
  11. 11.What is the HCF of 6 and 12?
  12. 12.Write 81/90 in its simplest form. =
  13. 13.Is 30/54 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 18 and 42?
  15. 15.What is the HCF of 8 and 14?
  16. 16.What is the HCF of 15 and 35?
  17. 17.Is 1/5 in its simplest form? (a) Yes (b) No
  18. 18.Write 35/50 in its simplest form. =
  19. 19.Write 15/24 in its simplest form. =
  20. 20.What is the HCF of 32 and 40?
  21. 21.Write 5/50 in its simplest form. =
  22. 22.What is the HCF of 16 and 24?
  23. 23.What is the HCF of 3 and 21?
  24. 24.Write 4/18 in its simplest form. =
  25. 25.Write 14/16 in its simplest form. =
  26. 26.What is the HCF of 63 and 72?
  27. 27.What is the HCF of 5 and 15?
  28. 28.Is 27/30 in its simplest form? (a) No (b) Yes
  29. 29.Write 8/16 in its simplest form. =
  30. 30.Write 21/30 in its simplest form. =
  31. 31.What is the HCF of 10 and 35?
  32. 32.Is 4/7 in its simplest form? (a) Yes (b) No
  33. 33.Write 18/21 in its simplest form. =
  34. 34.Write 7/28 in its simplest form. =
  35. 35.What is the HCF of 36 and 40?
  36. 36.Write 25/45 in its simplest form. =
  37. 37.Is 3/4 in its simplest form? (a) No (b) Yes
  38. 38.Write 12/15 in its simplest form. =
  39. 39.What is the HCF of 63 and 81?
  40. 40.Is 6/16 in its simplest form? (a) Yes (b) No

Answer key

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

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