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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 912 · 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. 1.1/3 − 2/7 =
  2. 2.4/5 − 1/2 =
  3. 3.2/3 − 3/5 =
  4. 4.3/7 − 1/4 =
  5. 5.A tank is 2/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  6. 6.Rohan has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  7. 7.6/7 − 1/3 =
  8. 8.A bottle has 2/3 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  9. 9.3/7 − 1/3 =
  10. 10.5/7 − 1/3 =
  11. 11.A tank is 7/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  12. 12.1/2 − 1/9 =
  13. 13.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  14. 14.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  15. 15.A bottle has 7/10 litre of juice. Rohan drinks 1/5 litre. How much juice is left (in litres)? =
  16. 16.Arjun has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  17. 17.Vihaan has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  18. 18.1/6 − 1/10 =
  19. 19.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  20. 20.A tank is 1/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  21. 21.7/9 − 1/6 =
  22. 22.Rohan has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  23. 23.4/7 − 1/2 =
  24. 24.Vihaan has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  25. 25.A bottle has 3/5 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  26. 26.3/4 − 5/7 =
  27. 27.A tank is 5/6 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  28. 28.6/7 − 2/3 =
  29. 29.Riya has a ribbon 9/10 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 2/9 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  31. 31.5/6 − 3/8 =
  32. 32.7/9 − 2/3 =
  33. 33.Meera has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  34. 34.7/8 − 1/3 =
  35. 35.6/7 − 1/4 =
  36. 36.Anaya has a ribbon 1/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  37. 37.A bottle has 1/2 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  38. 38.5/6 − 4/9 =
  39. 39.5/6 − 1/9 =
  40. 40.A bottle has 8/9 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =

Answer key

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

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