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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 80 · 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. 1.2/3 − 3/7 =
  2. 2.A bottle has 6/7 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 1/3 litre of juice. Aarav drinks 2/7 litre. How much juice is left (in litres)? =
  4. 4.1/3 − 1/7 =
  5. 5.3/4 − 2/7 =
  6. 6.3/4 − 2/5 =
  7. 7.Arjun has a ribbon 9/10 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  8. 8.Rohan has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  9. 9.Tara has a ribbon 1/2 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  10. 10.7/10 − 3/5 =
  11. 11.1/2 − 1/5 =
  12. 12.Diya has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  13. 13.5/9 − 1/6 =
  14. 14.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  15. 15.A tank is 1/2 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  16. 16.5/8 − 1/6 =
  17. 17.3/5 − 1/6 =
  18. 18.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? =
  19. 19.4/9 − 1/6 =
  20. 20.3/4 − 7/10 =
  21. 21.7/9 − 1/2 =
  22. 22.5/6 − 1/5 =
  23. 23.A bottle has 2/3 litre of juice. Rohan drinks 4/9 litre. How much juice is left (in litres)? =
  24. 24.Aarav has a ribbon 1/2 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  25. 25.A bottle has 5/6 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  26. 26.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? =
  27. 27.A tank is 2/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 9/10 litre of juice. Riya drinks 3/4 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 3/8 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 6/7 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  31. 31.Tara has a ribbon 5/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  32. 32.7/10 − 1/2 =
  33. 33.A bottle has 1/2 litre of juice. Arjun drinks 3/8 litre. How much juice is left (in litres)? =
  34. 34.1/4 − 1/7 =
  35. 35.Anaya has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  36. 36.4/7 − 1/2 =
  37. 37.7/8 − 1/2 =
  38. 38.Riya has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  39. 39.Rohan has a ribbon 3/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 3/4 litre of juice. Riya drinks 3/10 litre. How much juice is left (in litres)? =

Answer key

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

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