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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 345 · 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 bottle has 5/6 litre of juice. Vihaan drinks 5/9 litre. How much juice is left (in litres)? =
  2. 2.A tank is 1/2 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  3. 3.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  4. 4.7/8 − 1/2 =
  5. 5.9/10 − 1/2 =
  6. 6.3/4 − 1/7 =
  7. 7.5/6 − 1/10 =
  8. 8.1/4 − 1/7 =
  9. 9.A bottle has 1/2 litre of juice. Aarav drinks 1/9 litre. How much juice is left (in litres)? =
  10. 10.5/6 − 3/8 =
  11. 11.3/4 − 7/10 =
  12. 12.1/2 − 1/8 =
  13. 13.A bottle has 3/4 litre of juice. Vihaan drinks 7/10 litre. How much juice is left (in litres)? =
  14. 14.Arjun has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  15. 15.A bottle has 9/10 litre of juice. Vihaan drinks 1/5 litre. How much juice is left (in litres)? =
  16. 16.4/7 − 1/4 =
  17. 17.3/4 − 3/7 =
  18. 18.2/9 − 1/6 =
  19. 19.A tank is 5/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  20. 20.A tank is 5/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  21. 21.2/3 − 3/7 =
  22. 22.A bottle has 1/3 litre of juice. Vihaan drinks 2/7 litre. How much juice is left (in litres)? =
  23. 23.1/2 − 2/9 =
  24. 24.A bottle has 2/7 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  25. 25.A tank is 1/2 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  26. 26.A tank is 7/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 3/4 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 1/4 litre of juice. Vihaan drinks 1/7 litre. How much juice is left (in litres)? =
  30. 30.1/4 − 1/8 =
  31. 31.1/5 − 1/10 =
  32. 32.A bottle has 4/7 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  33. 33.Riya has a ribbon 2/3 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  34. 34.A tank is 7/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  35. 35.5/6 − 7/9 =
  36. 36.4/7 − 1/2 =
  37. 37.5/7 − 1/4 =
  38. 38.A bottle has 9/10 litre of juice. Ishaan drinks 5/6 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 9/10 litre of juice. Aarav drinks 4/5 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 3/4 litre of juice. Tara drinks 1/8 litre. How much juice is left (in litres)? =

Answer key

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

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