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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 679 · 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. 1.5/6 − 7/10 =
  2. 2.A bottle has 5/6 litre of juice. Aarav drinks 7/9 litre. How much juice is left (in litres)? =
  3. 3.7/9 − 2/3 =
  4. 4.A tank is 7/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  5. 5.3/4 − 5/8 =
  6. 6.2/3 − 1/9 =
  7. 7.Meera has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  8. 8.A tank is 7/8 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  9. 9.4/5 − 1/6 =
  10. 10.Kabir has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  11. 11.A bottle has 1/3 litre of juice. Ishaan drinks 1/5 litre. How much juice is left (in litres)? =
  12. 12.5/9 − 1/3 =
  13. 13.Ishaan has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 2/3 litre of juice. Vihaan drinks 3/7 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 2/3 litre of juice. Aarav drinks 3/10 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 9/10 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  17. 17.Arjun has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  18. 18.Riya has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 2/5 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  20. 20.A bottle has 7/8 litre of juice. Vihaan drinks 5/6 litre. How much juice is left (in litres)? =
  21. 21.2/3 − 1/8 =
  22. 22.A tank is 9/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  23. 23.Diya has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  24. 24.4/5 − 3/10 =
  25. 25.A tank is 5/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  26. 26.2/3 − 3/7 =
  27. 27.5/6 − 2/9 =
  28. 28.3/4 − 3/10 =
  29. 29.1/4 − 1/6 =
  30. 30.7/8 − 1/2 =
  31. 31.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? =
  32. 32.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  33. 33.A bottle has 1/2 litre of juice. Vihaan drinks 3/8 litre. How much juice is left (in litres)? =
  34. 34.A bottle has 8/9 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 5/6 litre of juice. Aarav drinks 5/8 litre. How much juice is left (in litres)? =
  36. 36.1/2 − 1/8 =
  37. 37.A bottle has 2/3 litre of juice. Ishaan drinks 2/5 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 3/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  39. 39.9/10 − 2/5 =
  40. 40.6/7 − 1/3 =

Answer key

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

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