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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 753 · 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 48?
  2. 2.What is the HCF of 6 and 21?
  3. 3.What is the HCF of 8 and 14?
  4. 4.Write 42/54 in its simplest form. =
  5. 5.What is the HCF of 14 and 18?
  6. 6.Write 24/80 in its simplest form. =
  7. 7.Write 42/49 in its simplest form. =
  8. 8.Is 2/9 in its simplest form? (a) No (b) Yes
  9. 9.Is 2/7 in its simplest form? (a) No (b) Yes
  10. 10.Write 3/6 in its simplest form. =
  11. 11.What is the HCF of 36 and 63?
  12. 12.Write 24/56 in its simplest form. =
  13. 13.Write 32/36 in its simplest form. =
  14. 14.Write 24/30 in its simplest form. =
  15. 15.Is 5/30 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 36 and 45?
  17. 17.Is 20/28 in its simplest form? (a) Yes (b) No
  18. 18.Is 6/8 in its simplest form? (a) No (b) Yes
  19. 19.Is 4/6 in its simplest form? (a) Yes (b) No
  20. 20.Write 18/81 in its simplest form. =
  21. 21.What is the HCF of 4 and 32?
  22. 22.Write 6/54 in its simplest form. =
  23. 23.What is the HCF of 72 and 81?
  24. 24.Write 4/6 in its simplest form. =
  25. 25.Write 7/21 in its simplest form. =
  26. 26.Write 27/30 in its simplest form. =
  27. 27.What is the HCF of 27 and 36?
  28. 28.Write 6/42 in its simplest form. =
  29. 29.What is the HCF of 30 and 54?
  30. 30.Is 3/10 in its simplest form? (a) No (b) Yes
  31. 31.Write 2/18 in its simplest form. =
  32. 32.Write 3/30 in its simplest form. =
  33. 33.Is 18/20 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 27 and 90?
  35. 35.Write 21/49 in its simplest form. =
  36. 36.What is the HCF of 6 and 9?
  37. 37.Write 72/81 in its simplest form. =
  38. 38.What is the HCF of 3 and 21?
  39. 39.Write 9/63 in its simplest form. =
  40. 40.What is the HCF of 9 and 12?

Answer key

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

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