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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 375 · 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 49/63 in its simplest form. =
  2. 2.Write 35/49 in its simplest form. =
  3. 3.Write 2/14 in its simplest form. =
  4. 4.Is 3/30 in its simplest form? (a) Yes (b) No
  5. 5.What is the HCF of 4 and 12?
  6. 6.What is the HCF of 63 and 72?
  7. 7.Is 1/6 in its simplest form? (a) Yes (b) No
  8. 8.Is 7/9 in its simplest form? (a) No (b) Yes
  9. 9.Is 7/10 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 42 and 49?
  11. 11.Is 1/2 in its simplest form? (a) No (b) Yes
  12. 12.Write 4/10 in its simplest form. =
  13. 13.What is the HCF of 16 and 28?
  14. 14.What is the HCF of 21 and 27?
  15. 15.Write 8/36 in its simplest form. =
  16. 16.Is 20/35 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 4 and 36?
  18. 18.What is the HCF of 14 and 35?
  19. 19.Write 10/15 in its simplest form. =
  20. 20.Is 5/9 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 14 and 16?
  22. 22.Is 5/6 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 9 and 12?
  24. 24.Is 5/30 in its simplest form? (a) No (b) Yes
  25. 25.Write 9/45 in its simplest form. =
  26. 26.Is 5/40 in its simplest form? (a) No (b) Yes
  27. 27.Write 30/36 in its simplest form. =
  28. 28.What is the HCF of 7 and 28?
  29. 29.What is the HCF of 81 and 90?
  30. 30.What is the HCF of 2 and 16?
  31. 31.Is 8/9 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 10 and 45?
  33. 33.Is 6/14 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 40 and 72?
  35. 35.Write 28/40 in its simplest form. =
  36. 36.Is 6/16 in its simplest form? (a) Yes (b) No
  37. 37.Write 9/54 in its simplest form. =
  38. 38.Is 5/50 in its simplest form? (a) No (b) Yes
  39. 39.Is 5/35 in its simplest form? (a) Yes (b) No
  40. 40.Write 3/30 in its simplest form. =

Answer key

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

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