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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 190 · 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 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  2. 2.7/9 − 1/2 =
  3. 3.Anaya has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  4. 4.Arjun has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  5. 5.3/4 − 3/8 =
  6. 6.1/3 − 2/9 =
  7. 7.3/8 − 1/3 =
  8. 8.A tank is 7/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  9. 9.5/9 − 1/3 =
  10. 10.Anaya has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  11. 11.A bottle has 3/4 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  12. 12.Anaya has a ribbon 9/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  13. 13.5/9 − 1/2 =
  14. 14.2/3 − 4/9 =
  15. 15.A bottle has 5/6 litre of juice. Anaya drinks 2/9 litre. How much juice is left (in litres)? =
  16. 16.Kabir has a ribbon 3/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  17. 17.A bottle has 5/7 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  18. 18.5/6 − 2/3 =
  19. 19.Arjun has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  20. 20.8/9 − 1/2 =
  21. 21.A bottle has 7/8 litre of juice. Rohan drinks 3/4 litre. How much juice is left (in litres)? =
  22. 22.A tank is 8/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.A tank is 2/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  24. 24.A bottle has 3/5 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  25. 25.Meera has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  26. 26.6/7 − 2/3 =
  27. 27.1/3 − 1/6 =
  28. 28.2/5 − 1/3 =
  29. 29.Kabir has a ribbon 7/10 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 7/10 litre of juice. Diya drinks 2/5 litre. How much juice is left (in litres)? =
  31. 31.2/3 − 1/10 =
  32. 32.A bottle has 2/3 litre of juice. Riya drinks 2/7 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 1/2 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  34. 34.6/7 − 1/4 =
  35. 35.2/3 − 4/7 =
  36. 36.4/7 − 1/4 =
  37. 37.A bottle has 5/6 litre of juice. Sara drinks 5/8 litre. How much juice is left (in litres)? =
  38. 38.Sara has a ribbon 5/6 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  39. 39.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  40. 40.3/4 − 5/7 =

Answer key

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

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