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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 284 · 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 3/4 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  2. 2.9/10 − 2/5 =
  3. 3.A tank is 9/10 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.Tara has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  5. 5.A bottle has 2/5 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  6. 6.Diya has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  7. 7.6/7 − 1/3 =
  8. 8.A bottle has 5/6 litre of juice. Arjun drinks 4/9 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 5/6 litre of juice. Aarav drinks 2/5 litre. How much juice is left (in litres)? =
  10. 10.A bottle has 2/3 litre of juice. Aarav drinks 3/8 litre. How much juice is left (in litres)? =
  11. 11.6/7 − 1/2 =
  12. 12.1/2 − 1/7 =
  13. 13.A tank is 1/2 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  14. 14.4/5 − 3/4 =
  15. 15.2/5 − 1/3 =
  16. 16.1/6 − 1/8 =
  17. 17.7/10 − 3/5 =
  18. 18.5/6 − 4/5 =
  19. 19.5/9 − 1/2 =
  20. 20.7/8 − 1/3 =
  21. 21.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? =
  22. 22.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  23. 23.Rohan has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  24. 24.1/2 − 3/8 =
  25. 25.A bottle has 7/9 litre of juice. Aarav drinks 2/3 litre. How much juice is left (in litres)? =
  26. 26.4/5 − 1/10 =
  27. 27.Rohan has a ribbon 7/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  28. 28.Tara has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 1/3 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  30. 30.A tank is 5/6 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  31. 31.2/3 − 2/7 =
  32. 32.Tara has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  33. 33.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 1/2 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  35. 35.1/4 − 1/8 =
  36. 36.A bottle has 7/10 litre of juice. Diya drinks 3/5 litre. How much juice is left (in litres)? =
  37. 37.5/6 − 3/5 =
  38. 38.A bottle has 5/9 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  39. 39.9/10 − 5/6 =
  40. 40.5/7 − 1/4 =

Answer key

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

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