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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 649 · 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 20/28 in its simplest form. =
  2. 2.What is the HCF of 6 and 60?
  3. 3.Write 12/20 in its simplest form. =
  4. 4.Write 6/30 in its simplest form. =
  5. 5.Write 18/63 in its simplest form. =
  6. 6.Write 8/40 in its simplest form. =
  7. 7.Write 81/90 in its simplest form. =
  8. 8.What is the HCF of 28 and 36?
  9. 9.Is 9/30 in its simplest form? (a) No (b) Yes
  10. 10.Write 30/36 in its simplest form. =
  11. 11.Write 63/72 in its simplest form. =
  12. 12.Write 14/20 in its simplest form. =
  13. 13.Write 4/40 in its simplest form. =
  14. 14.Is 5/8 in its simplest form? (a) No (b) Yes
  15. 15.Write 10/18 in its simplest form. =
  16. 16.Is 18/20 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 9 and 30?
  18. 18.Is 3/4 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 8 and 36?
  20. 20.Write 40/72 in its simplest form. =
  21. 21.Is 3/5 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 48 and 56?
  23. 23.What is the HCF of 9 and 15?
  24. 24.What is the HCF of 12 and 28?
  25. 25.Is 6/10 in its simplest form? (a) No (b) Yes
  26. 26.Write 9/18 in its simplest form. =
  27. 27.What is the HCF of 2 and 10?
  28. 28.Is 1/9 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 16 and 72?
  30. 30.Write 4/6 in its simplest form. =
  31. 31.Is 8/10 in its simplest form? (a) Yes (b) No
  32. 32.Write 21/49 in its simplest form. =
  33. 33.What is the HCF of 4 and 32?
  34. 34.Is 36/42 in its simplest form? (a) Yes (b) No
  35. 35.Is 4/5 in its simplest form? (a) No (b) Yes
  36. 36.Write 49/63 in its simplest form. =
  37. 37.Is 18/42 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 6 and 15?
  39. 39.What is the HCF of 42 and 54?
  40. 40.Is 9/10 in its simplest form? (a) No (b) Yes

Answer key

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

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