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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 556 · 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 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  2. 2.1/2 − 2/9 =
  3. 3.Riya has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  4. 4.2/5 − 1/3 =
  5. 5.5/6 − 1/8 =
  6. 6.7/10 − 2/3 =
  7. 7.1/2 − 1/9 =
  8. 8.2/3 − 1/5 =
  9. 9.5/6 − 1/9 =
  10. 10.A bottle has 5/9 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  11. 11.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  12. 12.Vihaan has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  13. 13.1/2 − 3/7 =
  14. 14.5/8 − 1/4 =
  15. 15.Arjun has a ribbon 9/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  16. 16.8/9 − 1/2 =
  17. 17.A bottle has 4/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  18. 18.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  19. 19.1/3 − 1/10 =
  20. 20.A bottle has 2/5 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  21. 21.2/3 − 2/9 =
  22. 22.1/2 − 2/7 =
  23. 23.A bottle has 2/3 litre of juice. Aarav drinks 3/10 litre. How much juice is left (in litres)? =
  24. 24.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.A bottle has 6/7 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  26. 26.1/2 − 1/5 =
  27. 27.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 5/6 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  29. 29.8/9 − 5/6 =
  30. 30.2/3 − 2/7 =
  31. 31.5/6 − 3/4 =
  32. 32.3/10 − 1/6 =
  33. 33.A tank is 1/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 9/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  35. 35.A bottle has 7/8 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  36. 36.2/3 − 5/9 =
  37. 37.A bottle has 3/4 litre of juice. Arjun drinks 2/7 litre. How much juice is left (in litres)? =
  38. 38.Aarav has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  39. 39.Ishaan has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 4/9 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =

Answer key

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

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