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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 503 · 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 25/45 in its simplest form. =
  2. 2.Is 4/9 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 7 and 28?
  4. 4.Is 2/9 in its simplest form? (a) Yes (b) No
  5. 5.Is 4/7 in its simplest form? (a) Yes (b) No
  6. 6.Write 9/54 in its simplest form. =
  7. 7.Is 21/24 in its simplest form? (a) No (b) Yes
  8. 8.Write 63/90 in its simplest form. =
  9. 9.Is 2/5 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 81 and 90?
  11. 11.Write 36/45 in its simplest form. =
  12. 12.Write 5/40 in its simplest form. =
  13. 13.Is 15/20 in its simplest form? (a) Yes (b) No
  14. 14.Is 12/40 in its simplest form? (a) Yes (b) No
  15. 15.Write 21/30 in its simplest form. =
  16. 16.Is 7/9 in its simplest form? (a) No (b) Yes
  17. 17.Write 8/32 in its simplest form. =
  18. 18.Write 3/15 in its simplest form. =
  19. 19.Write 40/48 in its simplest form. =
  20. 20.What is the HCF of 7 and 35?
  21. 21.What is the HCF of 4 and 6?
  22. 22.Write 6/12 in its simplest form. =
  23. 23.Is 6/21 in its simplest form? (a) Yes (b) No
  24. 24.Is 18/42 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 18 and 45?
  26. 26.Is 8/9 in its simplest form? (a) Yes (b) No
  27. 27.What is the HCF of 4 and 16?
  28. 28.What is the HCF of 4 and 18?
  29. 29.Write 9/21 in its simplest form. =
  30. 30.What is the HCF of 21 and 30?
  31. 31.Write 24/56 in its simplest form. =
  32. 32.What is the HCF of 8 and 72?
  33. 33.Write 15/21 in its simplest form. =
  34. 34.Write 9/90 in its simplest form. =
  35. 35.Is 7/10 in its simplest form? (a) Yes (b) No
  36. 36.Write 14/16 in its simplest form. =
  37. 37.What is the HCF of 18 and 48?
  38. 38.Write 40/64 in its simplest form. =
  39. 39.Write 9/45 in its simplest form. =
  40. 40.Write 4/18 in its simplest form. =

Answer key

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

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