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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 276 · 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. 1.2/3 − 1/5 =
  2. 2.5/6 − 1/9 =
  3. 3.7/8 − 2/3 =
  4. 4.4/9 − 1/3 =
  5. 5.5/7 − 1/2 =
  6. 6.A bottle has 6/7 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  7. 7.A bottle has 4/7 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  8. 8.Diya has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  9. 9.A bottle has 3/4 litre of juice. Rohan drinks 1/5 litre. How much juice is left (in litres)? =
  10. 10.7/10 − 1/5 =
  11. 11.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  12. 12.2/3 − 1/7 =
  13. 13.A tank is 1/2 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  14. 14.5/6 − 7/10 =
  15. 15.A tank is 3/4 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  16. 16.Meera has a ribbon 3/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  17. 17.A tank is 5/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  18. 18.Kabir has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  19. 19.9/10 − 1/4 =
  20. 20.6/7 − 1/4 =
  21. 21.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? =
  22. 22.5/9 − 1/3 =
  23. 23.A tank is 2/3 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  24. 24.Anaya has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  25. 25.5/7 − 1/3 =
  26. 26.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.A bottle has 3/10 litre of juice. Vihaan drinks 1/5 litre. How much juice is left (in litres)? =
  28. 28.2/5 − 1/6 =
  29. 29.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  30. 30.7/9 − 2/3 =
  31. 31.3/4 − 4/7 =
  32. 32.4/5 − 3/10 =
  33. 33.A tank is 2/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  34. 34.Rohan has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  35. 35.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  36. 36.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? =
  37. 37.3/7 − 1/4 =
  38. 38.3/4 − 3/7 =
  39. 39.A bottle has 4/9 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  40. 40.Tara has a ribbon 2/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =

Answer key

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

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