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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 766 · 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.What is the HCF of 30 and 36?
  2. 2.Is 28/40 in its simplest form? (a) Yes (b) No
  3. 3.Write 8/40 in its simplest form. =
  4. 4.Write 10/18 in its simplest form. =
  5. 5.What is the HCF of 12 and 42?
  6. 6.Write 6/36 in its simplest form. =
  7. 7.Write 14/16 in its simplest form. =
  8. 8.Is 1/3 in its simplest form? (a) Yes (b) No
  9. 9.Write 18/63 in its simplest form. =
  10. 10.Is 9/30 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 4 and 18?
  12. 12.What is the HCF of 18 and 30?
  13. 13.What is the HCF of 3 and 9?
  14. 14.Write 10/12 in its simplest form. =
  15. 15.Is 4/8 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 5 and 50?
  17. 17.Write 63/90 in its simplest form. =
  18. 18.Is 8/12 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 6 and 60?
  20. 20.Write 10/35 in its simplest form. =
  21. 21.Write 9/24 in its simplest form. =
  22. 22.Write 42/60 in its simplest form. =
  23. 23.Write 21/30 in its simplest form. =
  24. 24.Write 21/27 in its simplest form. =
  25. 25.Write 15/25 in its simplest form. =
  26. 26.Write 40/48 in its simplest form. =
  27. 27.What is the HCF of 28 and 40?
  28. 28.Write 14/18 in its simplest form. =
  29. 29.Write 7/49 in its simplest form. =
  30. 30.Write 20/45 in its simplest form. =
  31. 31.What is the HCF of 9 and 90?
  32. 32.Is 4/5 in its simplest form? (a) Yes (b) No
  33. 33.Is 2/7 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 10 and 15?
  35. 35.Write 3/18 in its simplest form. =
  36. 36.Is 15/18 in its simplest form? (a) No (b) Yes
  37. 37.What is the HCF of 35 and 42?
  38. 38.Write 35/42 in its simplest form. =
  39. 39.Write 8/20 in its simplest form. =
  40. 40.What is the HCF of 4 and 6?

Answer key

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

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