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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 67 · 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 2/3 litre of juice. Riya drinks 5/8 litre. How much juice is left (in litres)? =
  2. 2.4/5 − 3/10 =
  3. 3.9/10 − 1/6 =
  4. 4.1/3 − 1/10 =
  5. 5.2/3 − 1/9 =
  6. 6.2/3 − 1/7 =
  7. 7.Kabir has a ribbon 4/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  8. 8.Anaya has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  9. 9.A tank is 1/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  10. 10.5/9 − 1/3 =
  11. 11.3/4 − 2/7 =
  12. 12.Diya has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  13. 13.Riya has a ribbon 1/3 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  14. 14.Meera has a ribbon 6/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  15. 15.2/3 − 4/7 =
  16. 16.A tank is 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  17. 17.A bottle has 1/2 litre of juice. Rohan drinks 3/7 litre. How much juice is left (in litres)? =
  18. 18.9/10 − 1/3 =
  19. 19.A tank is 4/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  20. 20.8/9 − 1/6 =
  21. 21.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  22. 22.A tank is 4/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  23. 23.5/6 − 4/5 =
  24. 24.A bottle has 6/7 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 7/10 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  26. 26.A bottle has 2/3 litre of juice. Rohan drinks 3/10 litre. How much juice is left (in litres)? =
  27. 27.7/10 − 1/6 =
  28. 28.1/2 − 1/8 =
  29. 29.Arjun has a ribbon 2/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 5/6 litre of juice. Ishaan drinks 7/10 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 2/3 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  32. 32.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  33. 33.2/5 − 1/3 =
  34. 34.1/2 − 2/9 =
  35. 35.1/2 − 2/7 =
  36. 36.Tara has a ribbon 5/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  37. 37.8/9 − 5/6 =
  38. 38.3/8 − 1/6 =
  39. 39.7/8 − 2/3 =
  40. 40.3/4 − 3/5 =

Answer key

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

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