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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 241 · 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 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  2. 2.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? =
  3. 3.A bottle has 5/6 litre of juice. Tara drinks 5/8 litre. How much juice is left (in litres)? =
  4. 4.4/7 − 1/2 =
  5. 5.8/9 − 1/3 =
  6. 6.Meera has a ribbon 1/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  7. 7.9/10 − 4/5 =
  8. 8.5/8 − 1/2 =
  9. 9.Diya has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  10. 10.Vihaan has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  11. 11.5/9 − 1/3 =
  12. 12.Aarav has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  13. 13.A bottle has 4/5 litre of juice. Diya drinks 2/3 litre. How much juice is left (in litres)? =
  14. 14.1/3 − 1/7 =
  15. 15.Aarav has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 1/2 litre of juice. Meera drinks 3/8 litre. How much juice is left (in litres)? =
  17. 17.7/10 − 2/5 =
  18. 18.5/8 − 1/4 =
  19. 19.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? =
  20. 20.A bottle has 6/7 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  21. 21.5/6 − 2/9 =
  22. 22.A bottle has 5/6 litre of juice. Diya drinks 1/9 litre. How much juice is left (in litres)? =
  23. 23.A tank is 5/6 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  24. 24.A tank is 8/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.9/10 − 1/2 =
  26. 26.A bottle has 5/6 litre of juice. Anaya drinks 7/9 litre. How much juice is left (in litres)? =
  27. 27.7/10 − 1/6 =
  28. 28.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? =
  29. 29.Ishaan has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 7/9 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  31. 31.2/3 − 4/7 =
  32. 32.A tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  33. 33.1/5 − 1/10 =
  34. 34.A bottle has 7/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  35. 35.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  36. 36.A bottle has 4/5 litre of juice. Arjun drinks 2/3 litre. How much juice is left (in litres)? =
  37. 37.7/8 − 1/2 =
  38. 38.5/6 − 5/9 =
  39. 39.7/8 − 3/4 =
  40. 40.3/4 − 3/8 =

Answer key

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

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