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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 306 · 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 15 and 40?
  2. 2.Write 16/40 in its simplest form. =
  3. 3.Write 36/42 in its simplest form. =
  4. 4.Is 3/7 in its simplest form? (a) No (b) Yes
  5. 5.Write 5/50 in its simplest form. =
  6. 6.Write 4/10 in its simplest form. =
  7. 7.Write 42/48 in its simplest form. =
  8. 8.What is the HCF of 6 and 12?
  9. 9.What is the HCF of 12 and 27?
  10. 10.Write 20/45 in its simplest form. =
  11. 11.Write 2/16 in its simplest form. =
  12. 12.Write 4/6 in its simplest form. =
  13. 13.Write 45/50 in its simplest form. =
  14. 14.Is 21/27 in its simplest form? (a) Yes (b) No
  15. 15.Write 16/20 in its simplest form. =
  16. 16.Write 15/25 in its simplest form. =
  17. 17.Is 5/7 in its simplest form? (a) Yes (b) No
  18. 18.Is 7/10 in its simplest form? (a) Yes (b) No
  19. 19.Is 1/9 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 8 and 72?
  21. 21.Is 3/4 in its simplest form? (a) Yes (b) No
  22. 22.Write 27/30 in its simplest form. =
  23. 23.Write 6/16 in its simplest form. =
  24. 24.Is 28/36 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 15 and 24?
  26. 26.What is the HCF of 21 and 70?
  27. 27.What is the HCF of 3 and 18?
  28. 28.Is 12/20 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 5 and 20?
  30. 30.What is the HCF of 49 and 70?
  31. 31.Write 40/45 in its simplest form. =
  32. 32.Is 3/10 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 3 and 9?
  34. 34.Write 8/32 in its simplest form. =
  35. 35.What is the HCF of 18 and 21?
  36. 36.Write 16/24 in its simplest form. =
  37. 37.What is the HCF of 4 and 6?
  38. 38.Is 5/6 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 45 and 81?
  40. 40.Is 2/6 in its simplest form? (a) Yes (b) No

Answer key

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

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