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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 298 · 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 7 and 21?
  2. 2.Is 1/3 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 45 and 50?
  4. 4.What is the HCF of 7 and 42?
  5. 5.What is the HCF of 28 and 36?
  6. 6.What is the HCF of 21 and 24?
  7. 7.Write 27/36 in its simplest form. =
  8. 8.What is the HCF of 14 and 21?
  9. 9.Write 5/10 in its simplest form. =
  10. 10.Is 5/8 in its simplest form? (a) No (b) Yes
  11. 11.Write 72/80 in its simplest form. =
  12. 12.What is the HCF of 12 and 30?
  13. 13.Write 2/16 in its simplest form. =
  14. 14.What is the HCF of 12 and 15?
  15. 15.What is the HCF of 63 and 72?
  16. 16.Is 16/36 in its simplest form? (a) No (b) Yes
  17. 17.Is 2/3 in its simplest form? (a) No (b) Yes
  18. 18.Is 4/9 in its simplest form? (a) No (b) Yes
  19. 19.Write 10/12 in its simplest form. =
  20. 20.What is the HCF of 15 and 25?
  21. 21.What is the HCF of 49 and 56?
  22. 22.Write 14/35 in its simplest form. =
  23. 23.Is 3/7 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 6 and 10?
  25. 25.Write 21/30 in its simplest form. =
  26. 26.Write 3/9 in its simplest form. =
  27. 27.What is the HCF of 25 and 35?
  28. 28.Write 21/27 in its simplest form. =
  29. 29.Is 3/30 in its simplest form? (a) Yes (b) No
  30. 30.Is 5/7 in its simplest form? (a) No (b) Yes
  31. 31.Write 18/48 in its simplest form. =
  32. 32.What is the HCF of 8 and 24?
  33. 33.Is 2/5 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 2 and 18?
  35. 35.Write 4/10 in its simplest form. =
  36. 36.Write 20/36 in its simplest form. =
  37. 37.What is the HCF of 3 and 24?
  38. 38.Write 45/54 in its simplest form. =
  39. 39.Is 6/24 in its simplest form? (a) Yes (b) No
  40. 40.Write 6/16 in its simplest form. =

Answer key

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

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