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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 733 · 40 questions
TalentJR

The method (LCM, then take away): Find the LCM of the two bottom numbers. Change each fraction to that bottom number. Subtract the tops, keep the bottom, and simplify.

NameDateTime takenScore ___ / 40
  1. 1.5/6 − 3/4 =
  2. 2.Aarav has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  3. 3.7/10 − 1/3 =
  4. 4.1/2 − 1/10 =
  5. 5.Aarav has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  6. 6.A bottle has 5/6 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  7. 7.Ishaan has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  8. 8.5/8 − 1/6 =
  9. 9.A bottle has 3/5 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  10. 10.7/8 − 1/3 =
  11. 11.A bottle has 1/3 litre of juice. Rohan drinks 1/9 litre. How much juice is left (in litres)? =
  12. 12.A tank is 8/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  13. 13.1/2 − 1/6 =
  14. 14.Ishaan has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  15. 15.1/2 − 1/7 =
  16. 16.5/7 − 2/3 =
  17. 17.Kabir has a ribbon 4/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  18. 18.A tank is 1/2 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  19. 19.A tank is 5/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  20. 20.1/2 − 3/8 =
  21. 21.1/2 − 2/7 =
  22. 22.7/8 − 5/6 =
  23. 23.7/8 − 3/4 =
  24. 24.7/8 − 1/6 =
  25. 25.2/3 − 4/7 =
  26. 26.3/5 − 3/10 =
  27. 27.Kabir has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  28. 28.A bottle has 2/7 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  29. 29.3/5 − 1/4 =
  30. 30.7/10 − 1/4 =
  31. 31.A bottle has 3/4 litre of juice. Meera drinks 1/7 litre. How much juice is left (in litres)? =
  32. 32.5/6 − 1/10 =
  33. 33.A bottle has 5/6 litre of juice. Riya drinks 5/9 litre. How much juice is left (in litres)? =
  34. 34.Anaya has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  35. 35.3/5 − 1/10 =
  36. 36.5/6 − 2/5 =
  37. 37.9/10 − 1/5 =
  38. 38.A tank is 7/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  39. 39.Arjun has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 7/10 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =

Answer key

  1. 1/12
  2. 11/21
  3. 11/30
  4. 2/5
  5. 7/20
  6. 1/3
  7. 1/5
  8. 11/24
  9. 1/10
  10. 13/24
  11. 2/9
  12. 2/9
  13. 1/3
  14. 13/18
  15. 5/14
  16. 1/21
  17. 7/10
  18. 3/14
  19. 1/18
  20. 1/8
  21. 3/14
  22. 1/24
  23. 1/8
  24. 17/24
  25. 2/21
  26. 3/10
  27. 7/24
  28. 1/28
  29. 7/20
  30. 9/20
  31. 17/28
  32. 11/15
  33. 5/18
  34. 1/5
  35. 1/2
  36. 13/30
  37. 7/10
  38. 1/2
  39. 1/8
  40. 8/15

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