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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 224 · 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.Is 4/5 in its simplest form? (a) No (b) Yes
  2. 2.Write 49/70 in its simplest form. =
  3. 3.Is 1/5 in its simplest form? (a) Yes (b) No
  4. 4.Is 1/3 in its simplest form? (a) No (b) Yes
  5. 5.Is 6/18 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 6 and 12?
  7. 7.Is 18/21 in its simplest form? (a) Yes (b) No
  8. 8.Write 7/35 in its simplest form. =
  9. 9.Write 9/90 in its simplest form. =
  10. 10.Is 7/9 in its simplest form? (a) No (b) Yes
  11. 11.Write 18/45 in its simplest form. =
  12. 12.Is 1/6 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 30 and 42?
  15. 15.Write 12/14 in its simplest form. =
  16. 16.Write 4/36 in its simplest form. =
  17. 17.What is the HCF of 3 and 12?
  18. 18.Write 14/20 in its simplest form. =
  19. 19.What is the HCF of 16 and 20?
  20. 20.Is 2/3 in its simplest form? (a) Yes (b) No
  21. 21.Write 6/42 in its simplest form. =
  22. 22.Write 6/36 in its simplest form. =
  23. 23.What is the HCF of 28 and 35?
  24. 24.Write 9/15 in its simplest form. =
  25. 25.Write 15/25 in its simplest form. =
  26. 26.What is the HCF of 20 and 25?
  27. 27.What is the HCF of 7 and 28?
  28. 28.Is 3/4 in its simplest form? (a) Yes (b) No
  29. 29.Is 5/9 in its simplest form? (a) Yes (b) No
  30. 30.Write 3/9 in its simplest form. =
  31. 31.What is the HCF of 5 and 20?
  32. 32.Write 4/12 in its simplest form. =
  33. 33.Write 6/21 in its simplest form. =
  34. 34.Is 25/35 in its simplest form? (a) No (b) Yes
  35. 35.Is 2/5 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 6 and 15?
  37. 37.Write 63/90 in its simplest form. =
  38. 38.Is 6/60 in its simplest form? (a) No (b) Yes
  39. 39.Is 15/35 in its simplest form? (a) Yes (b) No
  40. 40.Write 45/50 in its simplest form. =

Answer key

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

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