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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 161 · 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 18/21 in its simplest form. =
  2. 2.Write 27/30 in its simplest form. =
  3. 3.What is the HCF of 4 and 14?
  4. 4.Write 15/18 in its simplest form. =
  5. 5.Is 6/18 in its simplest form? (a) Yes (b) No
  6. 6.Is 21/24 in its simplest form? (a) No (b) Yes
  7. 7.Write 8/72 in its simplest form. =
  8. 8.Write 12/42 in its simplest form. =
  9. 9.Write 9/15 in its simplest form. =
  10. 10.What is the HCF of 12 and 30?
  11. 11.Write 16/28 in its simplest form. =
  12. 12.Is 2/7 in its simplest form? (a) No (b) Yes
  13. 13.Is 4/9 in its simplest form? (a) Yes (b) No
  14. 14.Write 63/90 in its simplest form. =
  15. 15.Write 14/16 in its simplest form. =
  16. 16.Is 2/10 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 6 and 10?
  18. 18.Write 2/12 in its simplest form. =
  19. 19.Is 5/6 in its simplest form? (a) No (b) Yes
  20. 20.Is 14/18 in its simplest form? (a) Yes (b) No
  21. 21.Is 2/5 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 18 and 42?
  23. 23.Write 8/28 in its simplest form. =
  24. 24.What is the HCF of 24 and 40?
  25. 25.Write 9/27 in its simplest form. =
  26. 26.Write 14/35 in its simplest form. =
  27. 27.Is 2/9 in its simplest form? (a) Yes (b) No
  28. 28.Write 24/64 in its simplest form. =
  29. 29.What is the HCF of 7 and 21?
  30. 30.What is the HCF of 18 and 63?
  31. 31.What is the HCF of 45 and 50?
  32. 32.Is 4/8 in its simplest form? (a) No (b) Yes
  33. 33.Is 10/16 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 16 and 56?
  35. 35.What is the HCF of 16 and 20?
  36. 36.What is the HCF of 8 and 72?
  37. 37.What is the HCF of 3 and 21?
  38. 38.What is the HCF of 5 and 45?
  39. 39.What is the HCF of 12 and 16?
  40. 40.Is 36/40 in its simplest form? (a) Yes (b) No

Answer key

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

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