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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 653 · 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 12/20 in its simplest form. =
  2. 2.Write 21/24 in its simplest form. =
  3. 3.What is the HCF of 56 and 80?
  4. 4.Is 4/9 in its simplest form? (a) No (b) Yes
  5. 5.Write 63/72 in its simplest form. =
  6. 6.Write 45/50 in its simplest form. =
  7. 7.Is 7/9 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 81 and 90?
  9. 9.What is the HCF of 4 and 18?
  10. 10.Is 18/30 in its simplest form? (a) No (b) Yes
  11. 11.Write 7/42 in its simplest form. =
  12. 12.Write 28/32 in its simplest form. =
  13. 13.Write 10/18 in its simplest form. =
  14. 14.Write 45/63 in its simplest form. =
  15. 15.What is the HCF of 8 and 36?
  16. 16.Is 48/54 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 32 and 56?
  18. 18.Write 15/27 in its simplest form. =
  19. 19.What is the HCF of 49 and 63?
  20. 20.Is 8/9 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 40 and 64?
  22. 22.Write 9/12 in its simplest form. =
  23. 23.Write 12/16 in its simplest form. =
  24. 24.Write 14/49 in its simplest form. =
  25. 25.Is 2/5 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 24 and 30?
  27. 27.What is the HCF of 21 and 35?
  28. 28.Is 9/10 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 15 and 21?
  30. 30.Write 27/30 in its simplest form. =
  31. 31.Is 4/14 in its simplest form? (a) No (b) Yes
  32. 32.Is 5/35 in its simplest form? (a) No (b) Yes
  33. 33.Is 3/7 in its simplest form? (a) No (b) Yes
  34. 34.Write 36/45 in its simplest form. =
  35. 35.Is 12/30 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 21 and 30?
  37. 37.What is the HCF of 3 and 9?
  38. 38.Write 35/40 in its simplest form. =
  39. 39.Is 5/9 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 7 and 35?

Answer key

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

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