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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 426 · 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 21?
  2. 2.Is 9/10 in its simplest form? (a) No (b) Yes
  3. 3.Write 2/4 in its simplest form. =
  4. 4.Write 8/80 in its simplest form. =
  5. 5.What is the HCF of 9 and 24?
  6. 6.Write 18/48 in its simplest form. =
  7. 7.Is 1/5 in its simplest form? (a) No (b) Yes
  8. 8.Write 6/21 in its simplest form. =
  9. 9.What is the HCF of 14 and 49?
  10. 10.Is 4/5 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 63 and 70?
  12. 12.What is the HCF of 56 and 63?
  13. 13.Is 10/12 in its simplest form? (a) Yes (b) No
  14. 14.What is the HCF of 4 and 24?
  15. 15.What is the HCF of 6 and 18?
  16. 16.What is the HCF of 8 and 24?
  17. 17.What is the HCF of 81 and 90?
  18. 18.Write 14/49 in its simplest form. =
  19. 19.What is the HCF of 24 and 54?
  20. 20.Write 4/24 in its simplest form. =
  21. 21.What is the HCF of 18 and 63?
  22. 22.What is the HCF of 5 and 30?
  23. 23.What is the HCF of 27 and 45?
  24. 24.Is 1/2 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 10 and 15?
  26. 26.What is the HCF of 3 and 9?
  27. 27.What is the HCF of 12 and 27?
  28. 28.What is the HCF of 6 and 14?
  29. 29.What is the HCF of 5 and 10?
  30. 30.What is the HCF of 8 and 28?
  31. 31.Is 48/54 in its simplest form? (a) Yes (b) No
  32. 32.Write 36/63 in its simplest form. =
  33. 33.Write 18/81 in its simplest form. =
  34. 34.Write 28/32 in its simplest form. =
  35. 35.Is 18/30 in its simplest form? (a) No (b) Yes
  36. 36.Is 4/24 in its simplest form? (a) No (b) Yes
  37. 37.Is 2/7 in its simplest form? (a) Yes (b) No
  38. 38.Is 4/7 in its simplest form? (a) Yes (b) No
  39. 39.Write 24/64 in its simplest form. =
  40. 40.Write 27/63 in its simplest form. =

Answer key

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

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