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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 102 · 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 9/10 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  2. 2.3/4 − 2/7 =
  3. 3.1/2 − 1/4 =
  4. 4.Rohan has a ribbon 3/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  5. 5.A bottle has 4/5 litre of juice. Riya drinks 3/10 litre. How much juice is left (in litres)? =
  6. 6.7/9 − 1/2 =
  7. 7.4/5 − 1/3 =
  8. 8.A tank is 2/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 1/2 litre of juice. Diya drinks 1/9 litre. How much juice is left (in litres)? =
  10. 10.A bottle has 5/7 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  11. 11.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  12. 12.3/5 − 1/4 =
  13. 13.A bottle has 1/2 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  14. 14.3/4 − 1/8 =
  15. 15.7/10 − 3/5 =
  16. 16.A bottle has 8/9 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  17. 17.A bottle has 1/2 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  18. 18.9/10 − 4/5 =
  19. 19.1/5 − 1/10 =
  20. 20.Diya has a ribbon 3/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  21. 21.Meera has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  22. 22.1/4 − 1/7 =
  23. 23.2/3 − 1/4 =
  24. 24.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.A bottle has 5/8 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  26. 26.2/3 − 5/8 =
  27. 27.7/10 − 2/5 =
  28. 28.A bottle has 1/5 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  29. 29.1/2 − 3/10 =
  30. 30.A tank is 3/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  31. 31.A tank is 4/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  32. 32.A bottle has 1/2 litre of juice. Vihaan drinks 1/9 litre. How much juice is left (in litres)? =
  33. 33.5/6 − 2/3 =
  34. 34.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  35. 35.3/4 − 3/5 =
  36. 36.A tank is 9/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  37. 37.4/5 − 2/3 =
  38. 38.A tank is 7/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  39. 39.3/4 − 1/6 =
  40. 40.A bottle has 3/4 litre of juice. Diya drinks 7/10 litre. How much juice is left (in litres)? =

Answer key

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

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