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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 85 · 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 1/3 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 5/6 litre of juice. Tara drinks 3/10 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 1/2 litre of juice. Arjun drinks 2/7 litre. How much juice is left (in litres)? =
  4. 4.A tank is 1/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  5. 5.Meera has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  6. 6.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? =
  7. 7.A bottle has 2/5 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  8. 8.A tank is 5/6 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 1/6 litre of juice. Ishaan drinks 1/10 litre. How much juice is left (in litres)? =
  10. 10.7/9 − 1/3 =
  11. 11.A bottle has 2/9 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  12. 12.Meera has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  13. 13.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? =
  14. 14.A bottle has 2/5 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  15. 15.7/8 − 1/3 =
  16. 16.2/3 − 5/9 =
  17. 17.Rohan has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  18. 18.4/7 − 1/2 =
  19. 19.A bottle has 2/3 litre of juice. Meera drinks 3/5 litre. How much juice is left (in litres)? =
  20. 20.1/2 − 3/7 =
  21. 21.Arjun has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  22. 22.2/3 − 1/7 =
  23. 23.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  24. 24.Aarav has a ribbon 1/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  25. 25.Vihaan has a ribbon 1/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  26. 26.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.Ishaan has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  28. 28.4/5 − 1/4 =
  29. 29.2/3 − 2/7 =
  30. 30.1/2 − 1/4 =
  31. 31.2/5 − 1/6 =
  32. 32.5/6 − 7/10 =
  33. 33.2/5 − 1/10 =
  34. 34.4/5 − 1/6 =
  35. 35.A bottle has 3/8 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  36. 36.2/9 − 1/6 =
  37. 37.7/10 − 3/5 =
  38. 38.1/2 − 2/9 =
  39. 39.Diya has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  40. 40.1/2 − 1/8 =

Answer key

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

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