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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 417 · 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 7 and 56?
  2. 2.Write 81/90 in its simplest form. =
  3. 3.What is the HCF of 5 and 15?
  4. 4.Write 3/21 in its simplest form. =
  5. 5.What is the HCF of 15 and 50?
  6. 6.Write 5/20 in its simplest form. =
  7. 7.Is 3/30 in its simplest form? (a) No (b) Yes
  8. 8.Write 35/56 in its simplest form. =
  9. 9.Write 12/14 in its simplest form. =
  10. 10.What is the HCF of 4 and 20?
  11. 11.What is the HCF of 25 and 45?
  12. 12.Write 14/21 in its simplest form. =
  13. 13.What is the HCF of 9 and 36?
  14. 14.What is the HCF of 12 and 40?
  15. 15.Write 45/63 in its simplest form. =
  16. 16.Is 9/24 in its simplest form? (a) Yes (b) No
  17. 17.Is 1/10 in its simplest form? (a) No (b) Yes
  18. 18.Write 20/25 in its simplest form. =
  19. 19.Is 30/35 in its simplest form? (a) Yes (b) No
  20. 20.Write 40/64 in its simplest form. =
  21. 21.What is the HCF of 24 and 30?
  22. 22.Is 15/20 in its simplest form? (a) Yes (b) No
  23. 23.Is 6/15 in its simplest form? (a) No (b) Yes
  24. 24.Is 2/7 in its simplest form? (a) No (b) Yes
  25. 25.Write 2/8 in its simplest form. =
  26. 26.Is 3/4 in its simplest form? (a) Yes (b) No
  27. 27.Is 4/32 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 6 and 48?
  29. 29.Is 9/10 in its simplest form? (a) No (b) Yes
  30. 30.Is 3/7 in its simplest form? (a) No (b) Yes
  31. 31.Write 64/72 in its simplest form. =
  32. 32.Is 7/10 in its simplest form? (a) Yes (b) No
  33. 33.Is 10/35 in its simplest form? (a) No (b) Yes
  34. 34.Write 25/35 in its simplest form. =
  35. 35.Is 12/42 in its simplest form? (a) Yes (b) No
  36. 36.Write 54/60 in its simplest form. =
  37. 37.Write 21/56 in its simplest form. =
  38. 38.What is the HCF of 24 and 40?
  39. 39.What is the HCF of 7 and 35?
  40. 40.What is the HCF of 9 and 90?

Answer key

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

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