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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 238 · 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. 1.7/9 − 1/3 =
  2. 2.A tank is 1/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  3. 3.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? =
  4. 4.Ishaan has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  5. 5.A bottle has 3/4 litre of juice. Aarav drinks 5/8 litre. How much juice is left (in litres)? =
  6. 6.A tank is 2/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  7. 7.3/10 − 1/4 =
  8. 8.5/6 − 1/10 =
  9. 9.7/8 − 1/3 =
  10. 10.5/6 − 3/5 =
  11. 11.A bottle has 3/4 litre of juice. Tara drinks 5/8 litre. How much juice is left (in litres)? =
  12. 12.1/2 − 2/7 =
  13. 13.1/2 − 3/7 =
  14. 14.3/4 − 3/10 =
  15. 15.A bottle has 9/10 litre of juice. Diya drinks 2/3 litre. How much juice is left (in litres)? =
  16. 16.8/9 − 1/3 =
  17. 17.1/3 − 2/9 =
  18. 18.A tank is 5/6 full of water. Then water filling 7/9 of the tank is used. What fraction of the tank is full now? =
  19. 19.A bottle has 4/5 litre of juice. Aarav drinks 3/4 litre. How much juice is left (in litres)? =
  20. 20.A tank is 2/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  21. 21.3/4 − 1/8 =
  22. 22.A tank is 7/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  23. 23.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? =
  24. 24.2/3 − 2/9 =
  25. 25.A bottle has 1/2 litre of juice. Sara drinks 2/9 litre. How much juice is left (in litres)? =
  26. 26.A bottle has 1/3 litre of juice. Diya drinks 2/9 litre. How much juice is left (in litres)? =
  27. 27.6/7 − 1/2 =
  28. 28.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? =
  29. 29.A tank is 3/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  30. 30.4/5 − 3/4 =
  31. 31.5/6 − 2/3 =
  32. 32.Arjun has a ribbon 7/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  33. 33.5/7 − 1/4 =
  34. 34.3/7 − 1/3 =
  35. 35.Aarav has a ribbon 2/3 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.A bottle has 7/9 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  37. 37.5/6 − 2/5 =
  38. 38.Vihaan has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  39. 39.Anaya has a ribbon 3/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 5/6 litre of juice. Rohan drinks 4/9 litre. How much juice is left (in litres)? =

Answer key

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

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