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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 330 · 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 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? =
  2. 2.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  3. 3.7/9 − 1/2 =
  4. 4.5/6 − 2/9 =
  5. 5.A bottle has 9/10 litre of juice. Tara drinks 5/6 litre. How much juice is left (in litres)? =
  6. 6.4/7 − 1/4 =
  7. 7.A bottle has 7/10 litre of juice. Aarav drinks 2/5 litre. How much juice is left (in litres)? =
  8. 8.5/8 − 1/2 =
  9. 9.1/3 − 1/5 =
  10. 10.A tank is 3/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  11. 11.4/5 − 1/4 =
  12. 12.A bottle has 1/3 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  13. 13.1/2 − 1/8 =
  14. 14.9/10 − 1/5 =
  15. 15.2/3 − 2/9 =
  16. 16.5/7 − 1/2 =
  17. 17.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  18. 18.1/3 − 1/10 =
  19. 19.A tank is 6/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  20. 20.Anaya has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  21. 21.2/3 − 3/5 =
  22. 22.A bottle has 5/6 litre of juice. Meera drinks 3/10 litre. How much juice is left (in litres)? =
  23. 23.5/6 − 4/5 =
  24. 24.2/9 − 1/6 =
  25. 25.A bottle has 4/5 litre of juice. Ishaan drinks 1/10 litre. How much juice is left (in litres)? =
  26. 26.2/3 − 1/7 =
  27. 27.Kabir has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  28. 28.9/10 − 1/6 =
  29. 29.A bottle has 5/7 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  30. 30.A tank is 4/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  31. 31.Vihaan has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  32. 32.A tank is 3/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  33. 33.A tank is 1/2 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  34. 34.3/4 − 5/7 =
  35. 35.Rohan has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.8/9 − 5/6 =
  37. 37.A bottle has 3/4 litre of juice. Anaya drinks 4/7 litre. How much juice is left (in litres)? =
  38. 38.9/10 − 1/2 =
  39. 39.3/5 − 3/10 =
  40. 40.A bottle has 3/4 litre of juice. Vihaan drinks 4/7 litre. How much juice is left (in litres)? =

Answer key

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

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