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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 565 · 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 28/32 in its simplest form. =
  2. 2.Write 36/63 in its simplest form. =
  3. 3.Write 7/14 in its simplest form. =
  4. 4.Is 30/35 in its simplest form? (a) Yes (b) No
  5. 5.Is 2/8 in its simplest form? (a) No (b) Yes
  6. 6.Is 4/5 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 28 and 36?
  8. 8.What is the HCF of 12 and 20?
  9. 9.Write 2/12 in its simplest form. =
  10. 10.Write 18/20 in its simplest form. =
  11. 11.Write 8/10 in its simplest form. =
  12. 12.Write 24/42 in its simplest form. =
  13. 13.Write 42/49 in its simplest form. =
  14. 14.What is the HCF of 3 and 15?
  15. 15.What is the HCF of 18 and 63?
  16. 16.What is the HCF of 45 and 50?
  17. 17.Is 15/40 in its simplest form? (a) Yes (b) No
  18. 18.What is the HCF of 9 and 45?
  19. 19.Write 12/18 in its simplest form. =
  20. 20.What is the HCF of 81 and 90?
  21. 21.Write 45/63 in its simplest form. =
  22. 22.Is 15/35 in its simplest form? (a) No (b) Yes
  23. 23.Is 4/9 in its simplest form? (a) Yes (b) No
  24. 24.Is 6/27 in its simplest form? (a) Yes (b) No
  25. 25.Is 6/7 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 27 and 45?
  27. 27.Write 10/16 in its simplest form. =
  28. 28.What is the HCF of 28 and 35?
  29. 29.What is the HCF of 9 and 72?
  30. 30.Is 5/45 in its simplest form? (a) Yes (b) No
  31. 31.Is 8/9 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 6 and 21?
  33. 33.What is the HCF of 28 and 40?
  34. 34.What is the HCF of 45 and 81?
  35. 35.What is the HCF of 40 and 64?
  36. 36.Write 4/16 in its simplest form. =
  37. 37.Write 6/9 in its simplest form. =
  38. 38.Is 3/21 in its simplest form? (a) Yes (b) No
  39. 39.Write 36/40 in its simplest form. =
  40. 40.What is the HCF of 6 and 10?

Answer key

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

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