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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 270 · 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 9 and 36?
  2. 2.Is 25/40 in its simplest form? (a) Yes (b) No
  3. 3.Write 2/20 in its simplest form. =
  4. 4.What is the HCF of 9 and 12?
  5. 5.What is the HCF of 6 and 27?
  6. 6.Write 5/50 in its simplest form. =
  7. 7.Write 21/27 in its simplest form. =
  8. 8.Is 1/4 in its simplest form? (a) Yes (b) No
  9. 9.Is 3/7 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 16 and 72?
  11. 11.What is the HCF of 21 and 49?
  12. 12.What is the HCF of 7 and 42?
  13. 13.Is 3/24 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 18 and 21?
  15. 15.Write 6/16 in its simplest form. =
  16. 16.Is 4/6 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 81 and 90?
  18. 18.Write 6/18 in its simplest form. =
  19. 19.What is the HCF of 21 and 70?
  20. 20.What is the HCF of 8 and 12?
  21. 21.What is the HCF of 2 and 4?
  22. 22.Write 24/40 in its simplest form. =
  23. 23.Write 9/45 in its simplest form. =
  24. 24.Is 5/6 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 2 and 20?
  26. 26.Is 2/3 in its simplest form? (a) Yes (b) No
  27. 27.Write 18/42 in its simplest form. =
  28. 28.Write 72/81 in its simplest form. =
  29. 29.Is 4/7 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 36 and 63?
  31. 31.What is the HCF of 4 and 6?
  32. 32.Write 30/54 in its simplest form. =
  33. 33.Is 1/9 in its simplest form? (a) Yes (b) No
  34. 34.Write 4/14 in its simplest form. =
  35. 35.What is the HCF of 25 and 30?
  36. 36.Is 9/10 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 30 and 36?
  38. 38.What is the HCF of 18 and 42?
  39. 39.Write 6/54 in its simplest form. =
  40. 40.What is the HCF of 7 and 63?

Answer key

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

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