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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 77 · 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 1/2 litre of juice. Tara drinks 4/9 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 9/10 litre of juice. Anaya drinks 5/6 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 5/6 litre of juice. Vihaan drinks 7/9 litre. How much juice is left (in litres)? =
  4. 4.2/3 − 1/10 =
  5. 5.A bottle has 1/3 litre of juice. Diya drinks 1/7 litre. How much juice is left (in litres)? =
  6. 6.3/4 − 5/8 =
  7. 7.Aarav has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  8. 8.5/6 − 3/5 =
  9. 9.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  10. 10.5/6 − 7/9 =
  11. 11.2/3 − 3/10 =
  12. 12.5/6 − 2/5 =
  13. 13.5/6 − 4/9 =
  14. 14.A bottle has 7/8 litre of juice. Diya drinks 3/4 litre. How much juice is left (in litres)? =
  15. 15.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? =
  16. 16.9/10 − 2/3 =
  17. 17.A tank is 2/3 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  18. 18.A tank is 5/6 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  19. 19.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? =
  20. 20.7/9 − 1/6 =
  21. 21.2/5 − 1/10 =
  22. 22.A tank is 2/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  23. 23.3/4 − 1/6 =
  24. 24.Aarav has a ribbon 9/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  25. 25.4/9 − 1/3 =
  26. 26.A tank is 5/6 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  27. 27.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? =
  28. 28.Diya has a ribbon 5/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  29. 29.7/9 − 1/3 =
  30. 30.4/5 − 3/4 =
  31. 31.7/8 − 1/6 =
  32. 32.A tank is 7/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  33. 33.A tank is 5/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  34. 34.Tara has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  35. 35.A tank is 1/2 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  36. 36.4/5 − 7/10 =
  37. 37.5/6 − 1/3 =
  38. 38.1/2 − 1/4 =
  39. 39.4/5 − 1/10 =
  40. 40.2/3 − 2/7 =

Answer key

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

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