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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 13 · 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.Aarav has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  2. 2.A tank is 5/6 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  3. 3.1/2 − 2/7 =
  4. 4.Aarav has a ribbon 2/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  5. 5.1/2 − 4/9 =
  6. 6.8/9 − 1/2 =
  7. 7.1/6 − 1/8 =
  8. 8.A bottle has 6/7 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  9. 9.5/6 − 1/9 =
  10. 10.1/3 − 1/7 =
  11. 11.8/9 − 2/3 =
  12. 12.5/8 − 1/3 =
  13. 13.5/7 − 1/4 =
  14. 14.A bottle has 5/7 litre of juice. Vihaan drinks 1/2 litre. How much juice is left (in litres)? =
  15. 15.3/4 − 2/5 =
  16. 16.A bottle has 1/2 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  17. 17.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  18. 18.5/8 − 1/6 =
  19. 19.2/3 − 2/9 =
  20. 20.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  21. 21.5/6 − 4/9 =
  22. 22.Sara has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  23. 23.A tank is 5/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  24. 24.A tank is 5/6 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.Anaya has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  26. 26.1/5 − 1/10 =
  27. 27.A tank is 5/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  28. 28.7/10 − 1/5 =
  29. 29.A bottle has 1/4 litre of juice. Tara drinks 1/7 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 2/3 litre of juice. Sara drinks 5/9 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 5/6 litre of juice. Tara drinks 3/8 litre. How much juice is left (in litres)? =
  32. 32.7/10 − 1/4 =
  33. 33.2/7 − 1/4 =
  34. 34.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  35. 35.A tank is 1/2 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  36. 36.3/4 − 3/5 =
  37. 37.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? =
  38. 38.A bottle has 3/5 litre of juice. Riya drinks 1/10 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 3/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  40. 40.5/6 − 1/5 =

Answer key

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

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