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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 889 · 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 7/9 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  2. 2.3/5 − 1/4 =
  3. 3.A bottle has 2/3 litre of juice. Kabir drinks 1/9 litre. How much juice is left (in litres)? =
  4. 4.4/5 − 3/10 =
  5. 5.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? =
  6. 6.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? =
  7. 7.5/7 − 1/2 =
  8. 8.1/3 − 1/8 =
  9. 9.Meera has a ribbon 2/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  10. 10.Ishaan has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  11. 11.Ishaan has a ribbon 4/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  12. 12.1/2 − 3/10 =
  13. 13.Tara has a ribbon 5/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 2/3 litre of juice. Aarav drinks 4/9 litre. How much juice is left (in litres)? =
  15. 15.A tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  16. 16.A bottle has 7/10 litre of juice. Tara drinks 2/5 litre. How much juice is left (in litres)? =
  17. 17.Rohan has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  18. 18.A bottle has 8/9 litre of juice. Diya drinks 5/6 litre. How much juice is left (in litres)? =
  19. 19.A bottle has 1/3 litre of juice. Kabir drinks 2/7 litre. How much juice is left (in litres)? =
  20. 20.5/8 − 1/6 =
  21. 21.A bottle has 3/5 litre of juice. Riya drinks 1/10 litre. How much juice is left (in litres)? =
  22. 22.A tank is 4/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  23. 23.Kabir has a ribbon 1/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  24. 24.3/8 − 1/3 =
  25. 25.1/5 − 1/10 =
  26. 26.A tank is 7/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  27. 27.5/7 − 1/4 =
  28. 28.Sara has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  29. 29.7/8 − 1/3 =
  30. 30.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  31. 31.2/3 − 2/9 =
  32. 32.A tank is 7/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  33. 33.1/2 − 1/5 =
  34. 34.2/7 − 1/4 =
  35. 35.Aarav has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  36. 36.9/10 − 2/3 =
  37. 37.7/10 − 2/5 =
  38. 38.Aarav has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  39. 39.1/2 − 3/7 =
  40. 40.3/5 − 1/3 =

Answer key

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

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