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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 331 · 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.Write 21/28 in its simplest form. =
  2. 2.Write 18/60 in its simplest form. =
  3. 3.Is 2/7 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 35 and 45?
  5. 5.What is the HCF of 12 and 32?
  6. 6.What is the HCF of 5 and 25?
  7. 7.Is 9/12 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 42 and 54?
  9. 9.Write 4/18 in its simplest form. =
  10. 10.Is 3/10 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 6 and 27?
  12. 12.Is 20/45 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 8 and 10?
  14. 14.What is the HCF of 45 and 54?
  15. 15.What is the HCF of 27 and 30?
  16. 16.Is 42/48 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 18 and 45?
  18. 18.Is 10/15 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 54 and 60?
  20. 20.What is the HCF of 21 and 49?
  21. 21.What is the HCF of 15 and 25?
  22. 22.What is the HCF of 6 and 12?
  23. 23.Write 16/20 in its simplest form. =
  24. 24.Is 42/54 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 36 and 42?
  26. 26.What is the HCF of 30 and 36?
  27. 27.Is 15/18 in its simplest form? (a) Yes (b) No
  28. 28.Is 9/24 in its simplest form? (a) No (b) Yes
  29. 29.Is 8/9 in its simplest form? (a) No (b) Yes
  30. 30.Is 10/25 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 21 and 70?
  32. 32.Is 8/36 in its simplest form? (a) No (b) Yes
  33. 33.Write 14/18 in its simplest form. =
  34. 34.Write 36/42 in its simplest form. =
  35. 35.Write 21/49 in its simplest form. =
  36. 36.What is the HCF of 24 and 56?
  37. 37.Write 45/50 in its simplest form. =
  38. 38.Write 8/32 in its simplest form. =
  39. 39.Write 21/56 in its simplest form. =
  40. 40.What is the HCF of 7 and 35?

Answer key

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

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