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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 359 · 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. 1.5/6 − 3/10 =
  2. 2.Sara has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  3. 3.7/9 − 1/3 =
  4. 4.Ishaan has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  5. 5.4/7 − 1/3 =
  6. 6.Aarav has a ribbon 3/4 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  7. 7.A tank is 3/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  8. 8.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? =
  9. 9.4/5 − 1/10 =
  10. 10.3/4 − 1/5 =
  11. 11.1/3 − 1/5 =
  12. 12.A bottle has 1/3 litre of juice. Vihaan drinks 1/5 litre. How much juice is left (in litres)? =
  13. 13.1/2 − 3/7 =
  14. 14.A tank is 1/2 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  15. 15.A tank is 1/3 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  16. 16.1/4 − 1/6 =
  17. 17.3/4 − 4/7 =
  18. 18.Vihaan has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 1/3 litre of juice. Meera drinks 1/8 litre. How much juice is left (in litres)? =
  20. 20.5/9 − 1/2 =
  21. 21.7/10 − 1/4 =
  22. 22.4/5 − 1/2 =
  23. 23.1/2 − 2/9 =
  24. 24.A bottle has 1/2 litre of juice. Aarav drinks 4/9 litre. How much juice is left (in litres)? =
  25. 25.A tank is 8/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  26. 26.A bottle has 5/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  27. 27.2/3 − 3/5 =
  28. 28.A bottle has 5/6 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  29. 29.9/10 − 3/5 =
  30. 30.A bottle has 1/4 litre of juice. Riya drinks 1/5 litre. How much juice is left (in litres)? =
  31. 31.7/10 − 1/3 =
  32. 32.A bottle has 3/4 litre of juice. Anaya drinks 4/7 litre. How much juice is left (in litres)? =
  33. 33.1/2 − 1/7 =
  34. 34.2/3 − 3/10 =
  35. 35.1/6 − 1/9 =
  36. 36.2/3 − 4/7 =
  37. 37.A tank is 3/4 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  38. 38.A tank is 1/2 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  39. 39.A bottle has 7/10 litre of juice. Sara drinks 3/5 litre. How much juice is left (in litres)? =
  40. 40.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? =

Answer key

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

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