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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 675 · 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 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  2. 2.A bottle has 3/5 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  3. 3.A tank is 7/10 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.A tank is 5/6 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  5. 5.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  6. 6.1/5 − 1/6 =
  7. 7.Anaya has a ribbon 7/8 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  8. 8.5/6 − 1/8 =
  9. 9.Riya has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  10. 10.1/3 − 1/8 =
  11. 11.Ishaan has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 7/9 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  13. 13.5/6 − 2/3 =
  14. 14.3/5 − 1/4 =
  15. 15.5/7 − 1/3 =
  16. 16.2/9 − 1/6 =
  17. 17.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? =
  18. 18.1/2 − 1/8 =
  19. 19.9/10 − 1/5 =
  20. 20.8/9 − 1/6 =
  21. 21.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? =
  22. 22.Ishaan has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  23. 23.1/2 − 2/7 =
  24. 24.A bottle has 5/9 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  25. 25.Sara has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  26. 26.A tank is 1/2 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  27. 27.5/6 − 7/9 =
  28. 28.A bottle has 2/3 litre of juice. Kabir drinks 3/8 litre. How much juice is left (in litres)? =
  29. 29.A tank is 5/6 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  30. 30.A tank is 6/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  31. 31.A bottle has 5/6 litre of juice. Riya drinks 1/9 litre. How much juice is left (in litres)? =
  32. 32.1/2 − 1/10 =
  33. 33.A bottle has 9/10 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  34. 34.6/7 − 2/3 =
  35. 35.5/9 − 1/2 =
  36. 36.A tank is 4/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  37. 37.3/7 − 1/3 =
  38. 38.3/4 − 2/3 =
  39. 39.5/6 − 3/5 =
  40. 40.7/10 − 2/5 =

Answer key

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

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