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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 502 · 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 tank is 2/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  2. 2.Diya has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  3. 3.A bottle has 2/3 litre of juice. Ishaan drinks 2/9 litre. How much juice is left (in litres)? =
  4. 4.Meera has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  5. 5.A bottle has 3/8 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  6. 6.9/10 − 3/4 =
  7. 7.A bottle has 3/4 litre of juice. Anaya drinks 1/8 litre. How much juice is left (in litres)? =
  8. 8.1/2 − 2/7 =
  9. 9.A tank is 6/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  10. 10.4/9 − 1/3 =
  11. 11.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  12. 12.A tank is 5/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  13. 13.2/3 − 3/5 =
  14. 14.1/2 − 3/7 =
  15. 15.3/8 − 1/6 =
  16. 16.1/2 − 1/5 =
  17. 17.2/9 − 1/6 =
  18. 18.Anaya has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 3/4 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  20. 20.5/7 − 2/3 =
  21. 21.4/5 − 1/3 =
  22. 22.Ishaan has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  23. 23.7/8 − 1/2 =
  24. 24.A tank is 1/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  25. 25.A tank is 1/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  26. 26.A tank is 5/6 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  27. 27.Vihaan has a ribbon 1/2 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  28. 28.1/4 − 1/8 =
  29. 29.5/8 − 1/2 =
  30. 30.1/4 − 1/5 =
  31. 31.2/3 − 2/9 =
  32. 32.Sara has a ribbon 1/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  33. 33.1/2 − 1/7 =
  34. 34.1/6 − 1/9 =
  35. 35.A bottle has 1/2 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 7/8 litre of juice. Diya drinks 3/4 litre. How much juice is left (in litres)? =
  37. 37.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? =
  38. 38.3/5 − 1/4 =
  39. 39.2/3 − 3/7 =
  40. 40.7/10 − 1/2 =

Answer key

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

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