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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 37 · 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. 1.2/5 − 1/4 =
  2. 2.3/8 − 1/3 =
  3. 3.Anaya has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  4. 4.Kabir has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  5. 5.2/3 − 2/9 =
  6. 6.Aarav has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  7. 7.3/5 − 1/4 =
  8. 8.4/5 − 1/2 =
  9. 9.A tank is 9/10 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  10. 10.A bottle has 1/4 litre of juice. Aarav drinks 1/7 litre. How much juice is left (in litres)? =
  11. 11.7/10 − 2/3 =
  12. 12.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? =
  13. 13.4/9 − 1/6 =
  14. 14.7/8 − 1/4 =
  15. 15.A bottle has 1/2 litre of juice. Rohan drinks 3/10 litre. How much juice is left (in litres)? =
  16. 16.Vihaan has a ribbon 1/2 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  17. 17.A bottle has 1/2 litre of juice. Riya drinks 1/5 litre. How much juice is left (in litres)? =
  18. 18.3/5 − 1/6 =
  19. 19.6/7 − 3/4 =
  20. 20.A bottle has 2/5 litre of juice. Tara drinks 3/10 litre. How much juice is left (in litres)? =
  21. 21.Diya has a ribbon 9/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  22. 22.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.3/4 − 1/8 =
  24. 24.7/9 − 1/2 =
  25. 25.2/5 − 1/6 =
  26. 26.1/4 − 1/10 =
  27. 27.A bottle has 2/3 litre of juice. Aarav drinks 5/9 litre. How much juice is left (in litres)? =
  28. 28.1/2 − 1/9 =
  29. 29.A bottle has 3/4 litre of juice. Vihaan drinks 3/10 litre. How much juice is left (in litres)? =
  30. 30.Sara has a ribbon 7/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  31. 31.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? =
  32. 32.A bottle has 5/6 litre of juice. Riya drinks 1/10 litre. How much juice is left (in litres)? =
  33. 33.A tank is 4/5 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  34. 34.1/3 − 3/10 =
  35. 35.A tank is 3/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  36. 36.1/2 − 4/9 =
  37. 37.1/2 − 3/7 =
  38. 38.A bottle has 2/3 litre of juice. Rohan drinks 2/7 litre. How much juice is left (in litres)? =
  39. 39.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? =
  40. 40.Sara has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =

Answer key

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

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