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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 450 · 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. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  2. 2.1/3 − 1/7 =
  3. 3.Ishaan has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 1/3 litre of juice. Vihaan drinks 1/9 litre. How much juice is left (in litres)? =
  5. 5.1/3 − 1/6 =
  6. 6.1/2 − 3/8 =
  7. 7.A bottle has 3/4 litre of juice. Ishaan drinks 4/7 litre. How much juice is left (in litres)? =
  8. 8.1/3 − 1/5 =
  9. 9.Diya has a ribbon 6/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  10. 10.7/9 − 1/3 =
  11. 11.A bottle has 9/10 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  12. 12.1/6 − 1/10 =
  13. 13.A tank is 1/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  14. 14.3/4 − 1/8 =
  15. 15.7/9 − 2/3 =
  16. 16.2/5 − 3/10 =
  17. 17.A bottle has 7/10 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  18. 18.Vihaan has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  19. 19.2/3 − 4/7 =
  20. 20.1/2 − 1/7 =
  21. 21.3/4 − 3/10 =
  22. 22.1/2 − 2/7 =
  23. 23.A bottle has 7/10 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  24. 24.3/4 − 1/7 =
  25. 25.1/2 − 2/5 =
  26. 26.Sara has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  27. 27.2/3 − 2/5 =
  28. 28.A bottle has 7/10 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 3/4 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 1/5 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  31. 31.1/5 − 1/10 =
  32. 32.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? =
  33. 33.A tank is 8/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 4/5 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  35. 35.A bottle has 1/2 litre of juice. Diya drinks 3/7 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 3/7 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  37. 37.2/5 − 1/6 =
  38. 38.A tank is 9/10 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  39. 39.3/8 − 1/4 =
  40. 40.Sara has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =

Answer key

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

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