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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 800 · 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 5/6 litre of juice. Sara drinks 7/9 litre. How much juice is left (in litres)? =
  2. 2.2/3 − 3/8 =
  3. 3.7/10 − 3/5 =
  4. 4.3/10 − 1/5 =
  5. 5.A tank is 5/6 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  6. 6.2/3 − 4/9 =
  7. 7.1/4 − 1/5 =
  8. 8.A tank is 3/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.2/3 − 4/7 =
  10. 10.Tara has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  11. 11.4/7 − 1/3 =
  12. 12.Ishaan has a ribbon 2/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  13. 13.Vihaan has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  14. 14.2/3 − 1/10 =
  15. 15.A bottle has 3/4 litre of juice. Tara drinks 3/5 litre. How much juice is left (in litres)? =
  16. 16.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  17. 17.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  18. 18.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  19. 19.3/7 − 1/4 =
  20. 20.5/8 − 1/6 =
  21. 21.2/3 − 2/7 =
  22. 22.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.Diya has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  24. 24.1/3 − 2/7 =
  25. 25.Kabir has a ribbon 5/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  26. 26.2/9 − 1/6 =
  27. 27.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  28. 28.1/2 − 1/6 =
  29. 29.Riya has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 5/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 8/9 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  32. 32.3/4 − 1/3 =
  33. 33.1/2 − 4/9 =
  34. 34.Meera has a ribbon 1/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  35. 35.8/9 − 2/3 =
  36. 36.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? =
  37. 37.A tank is 1/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  38. 38.5/9 − 1/2 =
  39. 39.A bottle has 3/4 litre of juice. Meera drinks 5/7 litre. How much juice is left (in litres)? =
  40. 40.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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