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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 841 · 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.A bottle has 8/9 litre of juice. Meera drinks 5/6 litre. How much juice is left (in litres)? =
  2. 2.7/9 − 2/3 =
  3. 3.A bottle has 1/2 litre of juice. Diya drinks 4/9 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 9/10 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 2/7 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  6. 6.5/6 − 5/8 =
  7. 7.4/5 − 1/6 =
  8. 8.2/3 − 3/7 =
  9. 9.3/5 − 1/3 =
  10. 10.A bottle has 9/10 litre of juice. Diya drinks 3/4 litre. How much juice is left (in litres)? =
  11. 11.2/3 − 5/9 =
  12. 12.A bottle has 1/3 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  13. 13.Anaya has a ribbon 5/6 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 3/10 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 3/10 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  16. 16.5/6 − 1/9 =
  17. 17.3/4 − 2/7 =
  18. 18.Diya has a ribbon 7/10 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  19. 19.1/2 − 4/9 =
  20. 20.6/7 − 1/3 =
  21. 21.A bottle has 2/3 litre of juice. Anaya drinks 5/9 litre. How much juice is left (in litres)? =
  22. 22.8/9 − 5/6 =
  23. 23.Sara has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  24. 24.7/9 − 1/6 =
  25. 25.4/9 − 1/6 =
  26. 26.A bottle has 3/10 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  27. 27.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? =
  28. 28.3/4 − 3/8 =
  29. 29.A bottle has 3/4 litre of juice. Aarav drinks 5/7 litre. How much juice is left (in litres)? =
  30. 30.2/3 − 2/5 =
  31. 31.A bottle has 9/10 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  32. 32.Meera has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  33. 33.Diya has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  34. 34.5/9 − 1/2 =
  35. 35.A bottle has 1/2 litre of juice. Riya drinks 1/9 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 2/3 litre of juice. Arjun drinks 1/8 litre. How much juice is left (in litres)? =
  37. 37.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  38. 38.1/2 − 3/7 =
  39. 39.1/5 − 1/10 =
  40. 40.1/6 − 1/9 =

Answer key

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

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