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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 369 · 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. 1.4/9 − 1/3 =
  2. 2.1/3 − 1/9 =
  3. 3.5/8 − 1/3 =
  4. 4.8/9 − 1/6 =
  5. 5.Arjun has a ribbon 7/8 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  6. 6.A bottle has 3/4 litre of juice. Diya drinks 3/5 litre. How much juice is left (in litres)? =
  7. 7.Rohan has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  8. 8.A tank is 5/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 2/5 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  10. 10.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? =
  11. 11.A bottle has 9/10 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 4/5 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  13. 13.1/3 − 1/7 =
  14. 14.A bottle has 3/4 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  15. 15.5/7 − 1/3 =
  16. 16.Aarav has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  17. 17.Aarav has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  18. 18.A bottle has 5/6 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  19. 19.Riya has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  20. 20.1/3 − 1/5 =
  21. 21.A bottle has 4/9 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  22. 22.9/10 − 1/4 =
  23. 23.3/4 − 4/7 =
  24. 24.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.7/9 − 1/2 =
  26. 26.A bottle has 5/6 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  27. 27.5/6 − 7/9 =
  28. 28.7/9 − 2/3 =
  29. 29.3/10 − 1/4 =
  30. 30.Rohan has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  31. 31.A bottle has 4/5 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  32. 32.Vihaan has a ribbon 5/6 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  33. 33.4/5 − 1/10 =
  34. 34.A tank is 5/6 full of water. Then water filling 7/9 of the tank is used. What fraction of the tank is full now? =
  35. 35.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  36. 36.A bottle has 9/10 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  37. 37.4/5 − 3/4 =
  38. 38.Rohan has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  39. 39.A bottle has 2/3 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  40. 40.9/10 − 4/5 =

Answer key

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

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