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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 620 · 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 20?
  2. 2.Write 3/30 in its simplest form. =
  3. 3.Is 4/24 in its simplest form? (a) No (b) Yes
  4. 4.Write 12/27 in its simplest form. =
  5. 5.Write 12/30 in its simplest form. =
  6. 6.Write 21/30 in its simplest form. =
  7. 7.Write 12/28 in its simplest form. =
  8. 8.Is 15/50 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 5 and 40?
  10. 10.Write 2/16 in its simplest form. =
  11. 11.What is the HCF of 35 and 42?
  12. 12.What is the HCF of 35 and 45?
  13. 13.Is 42/48 in its simplest form? (a) Yes (b) No
  14. 14.Write 18/27 in its simplest form. =
  15. 15.Is 3/21 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 8 and 28?
  17. 17.Write 2/20 in its simplest form. =
  18. 18.What is the HCF of 25 and 35?
  19. 19.Write 40/72 in its simplest form. =
  20. 20.What is the HCF of 6 and 8?
  21. 21.What is the HCF of 16 and 36?
  22. 22.Is 5/35 in its simplest form? (a) No (b) Yes
  23. 23.Write 28/36 in its simplest form. =
  24. 24.Write 14/21 in its simplest form. =
  25. 25.Write 4/36 in its simplest form. =
  26. 26.Write 15/50 in its simplest form. =
  27. 27.What is the HCF of 9 and 24?
  28. 28.Is 18/48 in its simplest form? (a) No (b) Yes
  29. 29.Is 5/6 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 8 and 40?
  31. 31.What is the HCF of 30 and 42?
  32. 32.Is 2/12 in its simplest form? (a) Yes (b) No
  33. 33.Is 6/7 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 27 and 90?
  35. 35.Write 14/18 in its simplest form. =
  36. 36.Write 30/42 in its simplest form. =
  37. 37.Write 14/35 in its simplest form. =
  38. 38.Write 32/40 in its simplest form. =
  39. 39.Is 4/16 in its simplest form? (a) Yes (b) No
  40. 40.Write 35/45 in its simplest form. =

Answer key

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

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