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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 107 · 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. 1.3/5 − 1/10 =
  2. 2.6/7 − 1/3 =
  3. 3.A tank is 2/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  4. 4.7/9 − 2/3 =
  5. 5.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? =
  6. 6.1/2 − 1/7 =
  7. 7.Diya has a ribbon 2/3 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  8. 8.5/8 − 1/4 =
  9. 9.6/7 − 2/3 =
  10. 10.7/9 − 1/6 =
  11. 11.3/8 − 1/4 =
  12. 12.5/8 − 1/6 =
  13. 13.4/7 − 1/3 =
  14. 14.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? =
  15. 15.7/10 − 2/5 =
  16. 16.Meera has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  17. 17.A bottle has 7/10 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  18. 18.5/6 − 1/9 =
  19. 19.A tank is 9/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  20. 20.1/2 − 1/6 =
  21. 21.1/2 − 2/7 =
  22. 22.Vihaan has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  23. 23.Kabir has a ribbon 5/6 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  24. 24.2/3 − 5/9 =
  25. 25.Vihaan has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  26. 26.A bottle has 7/9 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  27. 27.A tank is 5/6 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  28. 28.A tank is 1/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  29. 29.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? =
  30. 30.Arjun has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  31. 31.4/7 − 1/4 =
  32. 32.A tank is 3/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  33. 33.A bottle has 2/3 litre of juice. Sara drinks 4/9 litre. How much juice is left (in litres)? =
  34. 34.1/3 − 1/8 =
  35. 35.A bottle has 5/6 litre of juice. Diya drinks 2/9 litre. How much juice is left (in litres)? =
  36. 36.A tank is 3/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  37. 37.A bottle has 2/5 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  38. 38.1/3 − 1/10 =
  39. 39.9/10 − 3/5 =
  40. 40.2/3 − 2/9 =

Answer key

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

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