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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 109 · 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 5 and 15?
  2. 2.Write 49/70 in its simplest form. =
  3. 3.What is the HCF of 8 and 24?
  4. 4.What is the HCF of 5 and 50?
  5. 5.Write 14/49 in its simplest form. =
  6. 6.What is the HCF of 4 and 6?
  7. 7.Write 25/45 in its simplest form. =
  8. 8.What is the HCF of 21 and 24?
  9. 9.What is the HCF of 63 and 81?
  10. 10.Write 8/10 in its simplest form. =
  11. 11.Is 2/12 in its simplest form? (a) No (b) Yes
  12. 12.Is 9/30 in its simplest form? (a) No (b) Yes
  13. 13.Is 12/16 in its simplest form? (a) Yes (b) No
  14. 14.Is 40/45 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 4 and 18?
  16. 16.What is the HCF of 7 and 49?
  17. 17.Write 72/81 in its simplest form. =
  18. 18.What is the HCF of 6 and 16?
  19. 19.Is 18/30 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 20 and 36?
  21. 21.Write 16/24 in its simplest form. =
  22. 22.Write 40/64 in its simplest form. =
  23. 23.Is 21/24 in its simplest form? (a) Yes (b) No
  24. 24.Write 2/4 in its simplest form. =
  25. 25.What is the HCF of 12 and 40?
  26. 26.Write 36/45 in its simplest form. =
  27. 27.Write 9/54 in its simplest form. =
  28. 28.Is 1/3 in its simplest form? (a) No (b) Yes
  29. 29.Write 6/15 in its simplest form. =
  30. 30.Is 15/27 in its simplest form? (a) Yes (b) No
  31. 31.Write 8/80 in its simplest form. =
  32. 32.Is 12/28 in its simplest form? (a) Yes (b) No
  33. 33.Write 8/72 in its simplest form. =
  34. 34.Is 4/8 in its simplest form? (a) Yes (b) No
  35. 35.What is the HCF of 10 and 14?
  36. 36.Write 35/42 in its simplest form. =
  37. 37.Is 42/54 in its simplest form? (a) No (b) Yes
  38. 38.Write 32/72 in its simplest form. =
  39. 39.Is 4/7 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 2 and 6?

Answer key

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

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