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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 147 · 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 63/81 in its simplest form. =
  2. 2.Is 3/5 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 18 and 60?
  4. 4.Write 36/63 in its simplest form. =
  5. 5.Write 8/32 in its simplest form. =
  6. 6.Write 2/8 in its simplest form. =
  7. 7.Is 1/7 in its simplest form? (a) No (b) Yes
  8. 8.Write 48/54 in its simplest form. =
  9. 9.Write 8/80 in its simplest form. =
  10. 10.What is the HCF of 4 and 14?
  11. 11.Is 5/8 in its simplest form? (a) Yes (b) No
  12. 12.Is 15/24 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 21 and 56?
  14. 14.What is the HCF of 45 and 63?
  15. 15.What is the HCF of 35 and 42?
  16. 16.Write 7/63 in its simplest form. =
  17. 17.Write 20/36 in its simplest form. =
  18. 18.Write 27/90 in its simplest form. =
  19. 19.Write 64/72 in its simplest form. =
  20. 20.Write 16/56 in its simplest form. =
  21. 21.Is 3/10 in its simplest form? (a) No (b) Yes
  22. 22.Write 9/72 in its simplest form. =
  23. 23.What is the HCF of 4 and 6?
  24. 24.Write 9/27 in its simplest form. =
  25. 25.What is the HCF of 7 and 42?
  26. 26.What is the HCF of 27 and 90?
  27. 27.Write 35/40 in its simplest form. =
  28. 28.What is the HCF of 18 and 45?
  29. 29.Write 21/49 in its simplest form. =
  30. 30.What is the HCF of 18 and 63?
  31. 31.Write 36/42 in its simplest form. =
  32. 32.Is 3/6 in its simplest form? (a) No (b) Yes
  33. 33.Is 9/10 in its simplest form? (a) No (b) Yes
  34. 34.Is 2/7 in its simplest form? (a) No (b) Yes
  35. 35.Write 2/4 in its simplest form. =
  36. 36.Is 2/8 in its simplest form? (a) No (b) Yes
  37. 37.Is 1/9 in its simplest form? (a) No (b) Yes
  38. 38.Write 6/24 in its simplest form. =
  39. 39.What is the HCF of 21 and 30?
  40. 40.What is the HCF of 4 and 20?

Answer key

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

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