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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 960 · 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 1/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  2. 2.3/7 − 1/4 =
  3. 3.7/8 − 1/3 =
  4. 4.3/7 − 1/3 =
  5. 5.3/4 − 4/7 =
  6. 6.A tank is 3/4 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  7. 7.1/6 − 1/10 =
  8. 8.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? =
  9. 9.4/5 − 1/4 =
  10. 10.Riya has a ribbon 6/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  11. 11.9/10 − 3/4 =
  12. 12.1/2 − 1/4 =
  13. 13.Rohan has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 3/5 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  15. 15.Arjun has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  16. 16.5/6 − 5/9 =
  17. 17.A bottle has 2/5 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  18. 18.A bottle has 8/9 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  19. 19.A bottle has 8/9 litre of juice. Ishaan drinks 5/6 litre. How much juice is left (in litres)? =
  20. 20.3/4 − 1/2 =
  21. 21.A tank is 7/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  22. 22.6/7 − 1/3 =
  23. 23.Vihaan has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  24. 24.1/2 − 4/9 =
  25. 25.Riya has a ribbon 3/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  26. 26.A bottle has 7/10 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  27. 27.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  28. 28.A tank is 1/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  29. 29.A bottle has 5/6 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  30. 30.2/5 − 1/10 =
  31. 31.3/5 − 1/6 =
  32. 32.Ishaan has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  33. 33.1/3 − 1/7 =
  34. 34.2/3 − 1/7 =
  35. 35.A bottle has 1/2 litre of juice. Anaya drinks 1/7 litre. How much juice is left (in litres)? =
  36. 36.1/2 − 2/5 =
  37. 37.Ishaan has a ribbon 1/2 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 5/6 litre of juice. Rohan drinks 5/8 litre. How much juice is left (in litres)? =
  39. 39.3/10 − 1/6 =
  40. 40.Tara has a ribbon 5/6 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =

Answer key

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

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