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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 442 · 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 18 and 42?
  2. 2.Write 20/36 in its simplest form. =
  3. 3.Is 6/7 in its simplest form? (a) Yes (b) No
  4. 4.Is 3/8 in its simplest form? (a) Yes (b) No
  5. 5.Write 14/18 in its simplest form. =
  6. 6.Write 4/6 in its simplest form. =
  7. 7.Is 25/30 in its simplest form? (a) No (b) Yes
  8. 8.Is 6/9 in its simplest form? (a) No (b) Yes
  9. 9.Is 1/9 in its simplest form? (a) No (b) Yes
  10. 10.Write 40/56 in its simplest form. =
  11. 11.Write 9/81 in its simplest form. =
  12. 12.Is 6/60 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 10 and 12?
  14. 14.Is 8/20 in its simplest form? (a) Yes (b) No
  15. 15.Is 15/40 in its simplest form? (a) Yes (b) No
  16. 16.Write 8/10 in its simplest form. =
  17. 17.Write 8/56 in its simplest form. =
  18. 18.Write 9/21 in its simplest form. =
  19. 19.Is 1/10 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 5 and 20?
  21. 21.Write 20/24 in its simplest form. =
  22. 22.Is 6/14 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 10 and 45?
  24. 24.What is the HCF of 9 and 15?
  25. 25.Is 5/9 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 20 and 28?
  27. 27.What is the HCF of 63 and 72?
  28. 28.Write 36/40 in its simplest form. =
  29. 29.Is 4/5 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 16 and 72?
  31. 31.Write 24/32 in its simplest form. =
  32. 32.Write 4/8 in its simplest form. =
  33. 33.Write 24/54 in its simplest form. =
  34. 34.Write 3/21 in its simplest form. =
  35. 35.Is 3/24 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 12 and 28?
  37. 37.Write 9/15 in its simplest form. =
  38. 38.Is 2/7 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 2 and 4?
  40. 40.What is the HCF of 18 and 45?

Answer key

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

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