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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 550 · 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 7/10 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 5/6 litre of juice. Aarav drinks 2/5 litre. How much juice is left (in litres)? =
  3. 3.3/4 − 5/7 =
  4. 4.2/3 − 3/7 =
  5. 5.2/3 − 4/9 =
  6. 6.7/8 − 1/2 =
  7. 7.A tank is 8/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  8. 8.Kabir has a ribbon 3/4 m long and cuts off 5/7 m. How long is the ribbon now (in m)? =
  9. 9.5/8 − 1/2 =
  10. 10.3/4 − 3/7 =
  11. 11.Tara has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 1/2 litre of juice. Diya drinks 1/7 litre. How much juice is left (in litres)? =
  13. 13.4/5 − 3/4 =
  14. 14.3/4 − 2/5 =
  15. 15.Meera has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 8/9 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  17. 17.Arjun has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  18. 18.1/2 − 2/9 =
  19. 19.7/9 − 1/6 =
  20. 20.A bottle has 6/7 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  21. 21.A tank is 5/6 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  22. 22.Anaya has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  23. 23.2/3 − 5/9 =
  24. 24.A bottle has 9/10 litre of juice. Aarav drinks 2/3 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 4/5 litre of juice. Vihaan drinks 3/10 litre. How much juice is left (in litres)? =
  26. 26.5/8 − 1/6 =
  27. 27.2/3 − 5/8 =
  28. 28.1/2 − 1/3 =
  29. 29.Rohan has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.Rohan has a ribbon 3/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  31. 31.A bottle has 1/2 litre of juice. Ishaan drinks 1/9 litre. How much juice is left (in litres)? =
  32. 32.Aarav has a ribbon 3/4 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  33. 33.A tank is 2/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  35. 35.7/9 − 1/2 =
  36. 36.Ishaan has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  37. 37.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  38. 38.A tank is 1/2 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  39. 39.3/4 − 4/7 =
  40. 40.A tank is 4/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =

Answer key

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

Free fractions lessons, practice and worksheets at talentjr.in/fractions-for-kids