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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 45 · 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. 1.5/9 − 1/6 =
  2. 2.4/5 − 1/4 =
  3. 3.1/3 − 3/10 =
  4. 4.Tara has a ribbon 2/3 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  5. 5.2/3 − 2/7 =
  6. 6.A bottle has 3/4 litre of juice. Vihaan drinks 3/8 litre. How much juice is left (in litres)? =
  7. 7.3/8 − 1/3 =
  8. 8.Anaya has a ribbon 3/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  9. 9.Kabir has a ribbon 9/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  10. 10.5/7 − 2/3 =
  11. 11.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  12. 12.A bottle has 3/5 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  13. 13.A tank is 5/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  14. 14.7/8 − 1/4 =
  15. 15.A bottle has 3/7 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  16. 16.3/4 − 1/10 =
  17. 17.A tank is 2/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  18. 18.A tank is 1/3 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  19. 19.Aarav has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  20. 20.A bottle has 2/3 litre of juice. Arjun drinks 4/9 litre. How much juice is left (in litres)? =
  21. 21.5/9 − 1/2 =
  22. 22.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? =
  23. 23.1/4 − 1/6 =
  24. 24.1/2 − 2/9 =
  25. 25.1/3 − 1/9 =
  26. 26.Sara has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  27. 27.Kabir has a ribbon 5/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  28. 28.A tank is 2/3 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  29. 29.A bottle has 2/3 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  30. 30.Rohan has a ribbon 1/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  31. 31.Riya has a ribbon 3/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  32. 32.A bottle has 5/6 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  33. 33.1/2 − 2/7 =
  34. 34.3/4 − 1/2 =
  35. 35.4/5 − 2/3 =
  36. 36.7/10 − 1/4 =
  37. 37.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? =
  38. 38.2/3 − 1/8 =
  39. 39.5/6 − 1/9 =
  40. 40.7/8 − 1/6 =

Answer key

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

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