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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 393 · 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 tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  2. 2.Aarav has a ribbon 7/8 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  3. 3.Rohan has a ribbon 5/6 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  4. 4.3/4 − 1/8 =
  5. 5.A bottle has 1/2 litre of juice. Sara drinks 2/7 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 6/7 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  7. 7.A bottle has 7/10 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  8. 8.3/4 − 2/7 =
  9. 9.1/2 − 1/9 =
  10. 10.8/9 − 1/6 =
  11. 11.1/6 − 1/8 =
  12. 12.3/8 − 1/6 =
  13. 13.Aarav has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  14. 14.Riya has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  15. 15.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? =
  16. 16.6/7 − 3/4 =
  17. 17.Arjun has a ribbon 1/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  18. 18.A tank is 4/5 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  19. 19.1/3 − 1/10 =
  20. 20.1/3 − 1/8 =
  21. 21.4/5 − 3/4 =
  22. 22.A tank is 2/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  23. 23.4/5 − 1/3 =
  24. 24.A tank is 5/6 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  25. 25.7/10 − 2/3 =
  26. 26.6/7 − 1/3 =
  27. 27.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 3/4 litre of juice. Meera drinks 3/7 litre. How much juice is left (in litres)? =
  29. 29.Kabir has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 1/3 litre of juice. Rohan drinks 2/9 litre. How much juice is left (in litres)? =
  31. 31.1/3 − 1/7 =
  32. 32.2/3 − 1/7 =
  33. 33.7/10 − 1/6 =
  34. 34.1/2 − 1/10 =
  35. 35.4/9 − 1/6 =
  36. 36.A bottle has 1/6 litre of juice. Arjun drinks 1/10 litre. How much juice is left (in litres)? =
  37. 37.A tank is 1/2 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  38. 38.Kabir has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  39. 39.Ishaan has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  40. 40.5/8 − 1/2 =

Answer key

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

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