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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 105 · 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 20 and 36?
  2. 2.What is the HCF of 63 and 70?
  3. 3.Is 18/30 in its simplest form? (a) Yes (b) No
  4. 4.Is 20/28 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 20 and 32?
  6. 6.Write 9/15 in its simplest form. =
  7. 7.Is 2/4 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 18 and 42?
  9. 9.Write 3/30 in its simplest form. =
  10. 10.Write 35/56 in its simplest form. =
  11. 11.Write 32/36 in its simplest form. =
  12. 12.What is the HCF of 21 and 35?
  13. 13.Is 1/8 in its simplest form? (a) Yes (b) No
  14. 14.Write 63/72 in its simplest form. =
  15. 15.What is the HCF of 7 and 14?
  16. 16.Is 8/36 in its simplest form? (a) No (b) Yes
  17. 17.Is 1/10 in its simplest form? (a) No (b) Yes
  18. 18.Write 6/36 in its simplest form. =
  19. 19.What is the HCF of 2 and 12?
  20. 20.Is 3/30 in its simplest form? (a) Yes (b) No
  21. 21.Is 1/3 in its simplest form? (a) No (b) Yes
  22. 22.Write 3/18 in its simplest form. =
  23. 23.What is the HCF of 9 and 15?
  24. 24.What is the HCF of 4 and 20?
  25. 25.What is the HCF of 40 and 48?
  26. 26.Write 30/54 in its simplest form. =
  27. 27.Is 6/60 in its simplest form? (a) No (b) Yes
  28. 28.Write 12/18 in its simplest form. =
  29. 29.What is the HCF of 7 and 49?
  30. 30.Write 10/14 in its simplest form. =
  31. 31.Write 8/56 in its simplest form. =
  32. 32.Is 1/6 in its simplest form? (a) No (b) Yes
  33. 33.Write 4/6 in its simplest form. =
  34. 34.Write 3/21 in its simplest form. =
  35. 35.What is the HCF of 8 and 24?
  36. 36.What is the HCF of 4 and 36?
  37. 37.Is 7/9 in its simplest form? (a) No (b) Yes
  38. 38.Write 6/42 in its simplest form. =
  39. 39.What is the HCF of 3 and 12?
  40. 40.Is 12/18 in its simplest form? (a) Yes (b) No

Answer key

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

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