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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 602 · 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 7/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  2. 2.2/3 − 2/7 =
  3. 3.7/8 − 5/6 =
  4. 4.5/6 − 3/5 =
  5. 5.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? =
  6. 6.3/4 − 5/7 =
  7. 7.A tank is 3/4 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  8. 8.5/6 − 2/9 =
  9. 9.A bottle has 1/2 litre of juice. Meera drinks 1/10 litre. How much juice is left (in litres)? =
  10. 10.Diya has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  11. 11.1/2 − 4/9 =
  12. 12.Aarav has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  13. 13.A bottle has 5/6 litre of juice. Sara drinks 4/9 litre. How much juice is left (in litres)? =
  14. 14.A bottle has 7/8 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 3/5 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 5/9 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  17. 17.1/2 − 2/7 =
  18. 18.A bottle has 3/5 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  19. 19.5/7 − 1/4 =
  20. 20.A bottle has 3/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  21. 21.A bottle has 4/9 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  22. 22.2/5 − 1/10 =
  23. 23.A tank is 7/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  24. 24.A tank is 1/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  25. 25.Rohan has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  26. 26.9/10 − 4/5 =
  27. 27.7/10 − 3/5 =
  28. 28.A bottle has 4/5 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  29. 29.Anaya has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.3/10 − 1/4 =
  31. 31.7/9 − 1/3 =
  32. 32.7/9 − 2/3 =
  33. 33.Kabir has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  34. 34.A bottle has 3/8 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  35. 35.2/9 − 1/6 =
  36. 36.A tank is 3/4 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  37. 37.5/6 − 7/10 =
  38. 38.A bottle has 2/3 litre of juice. Aarav drinks 1/9 litre. How much juice is left (in litres)? =
  39. 39.2/3 − 4/9 =
  40. 40.2/3 − 1/7 =

Answer key

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

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