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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 949 · 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 21?
  2. 2.Is 5/20 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 5 and 20?
  4. 4.Is 12/15 in its simplest form? (a) No (b) Yes
  5. 5.Write 3/21 in its simplest form. =
  6. 6.What is the HCF of 6 and 20?
  7. 7.What is the HCF of 49 and 70?
  8. 8.Write 15/18 in its simplest form. =
  9. 9.What is the HCF of 40 and 45?
  10. 10.Is 2/5 in its simplest form? (a) Yes (b) No
  11. 11.Is 9/24 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 7 and 70?
  13. 13.Is 1/5 in its simplest form? (a) No (b) Yes
  14. 14.Write 3/6 in its simplest form. =
  15. 15.Write 8/14 in its simplest form. =
  16. 16.What is the HCF of 6 and 14?
  17. 17.Write 5/50 in its simplest form. =
  18. 18.Is 1/4 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 3 and 12?
  20. 20.Write 12/20 in its simplest form. =
  21. 21.Is 6/30 in its simplest form? (a) Yes (b) No
  22. 22.Is 3/7 in its simplest form? (a) No (b) Yes
  23. 23.Is 9/15 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 9 and 72?
  25. 25.What is the HCF of 21 and 56?
  26. 26.Is 20/24 in its simplest form? (a) No (b) Yes
  27. 27.Is 4/8 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 30 and 35?
  29. 29.What is the HCF of 16 and 18?
  30. 30.Write 21/35 in its simplest form. =
  31. 31.Write 18/20 in its simplest form. =
  32. 32.Is 8/14 in its simplest form? (a) No (b) Yes
  33. 33.Write 24/32 in its simplest form. =
  34. 34.Write 9/24 in its simplest form. =
  35. 35.Write 9/45 in its simplest form. =
  36. 36.Write 6/30 in its simplest form. =
  37. 37.What is the HCF of 14 and 20?
  38. 38.What is the HCF of 7 and 35?
  39. 39.What is the HCF of 12 and 42?
  40. 40.What is the HCF of 15 and 25?

Answer key

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

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