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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 782 · 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. 1.3/4 − 1/5 =
  2. 2.A tank is 2/3 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  3. 3.Aarav has a ribbon 7/8 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 2/3 litre of juice. Tara drinks 4/9 litre. How much juice is left (in litres)? =
  5. 5.7/8 − 1/3 =
  6. 6.3/5 − 1/10 =
  7. 7.5/6 − 3/10 =
  8. 8.1/4 − 1/8 =
  9. 9.A tank is 1/2 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  10. 10.5/7 − 1/2 =
  11. 11.Ishaan has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 5/6 litre of juice. Tara drinks 1/9 litre. How much juice is left (in litres)? =
  13. 13.A tank is 1/2 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  14. 14.Vihaan has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  15. 15.9/10 − 1/5 =
  16. 16.A tank is 3/4 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  17. 17.A tank is 8/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  18. 18.1/4 − 1/7 =
  19. 19.Aarav has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  20. 20.7/10 − 2/3 =
  21. 21.A tank is 1/2 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  22. 22.7/10 − 1/3 =
  23. 23.A tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  24. 24.1/3 − 3/10 =
  25. 25.3/7 − 1/3 =
  26. 26.A tank is 2/3 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  27. 27.A bottle has 4/5 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  28. 28.3/10 − 1/5 =
  29. 29.6/7 − 3/4 =
  30. 30.A bottle has 5/6 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 1/3 litre of juice. Ishaan drinks 1/7 litre. How much juice is left (in litres)? =
  32. 32.A tank is 1/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  33. 33.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  34. 34.7/10 − 2/5 =
  35. 35.2/5 − 1/4 =
  36. 36.A bottle has 1/2 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  37. 37.5/6 − 1/8 =
  38. 38.4/5 − 1/6 =
  39. 39.Kabir has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  40. 40.Anaya has a ribbon 1/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =

Answer key

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

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