← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 515 · 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. 1.3/10 − 1/5 =
  2. 2.1/2 − 3/7 =
  3. 3.A bottle has 3/4 litre of juice. Aarav drinks 2/5 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 5/6 litre of juice. Meera drinks 3/10 litre. How much juice is left (in litres)? =
  5. 5.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  6. 6.5/6 − 2/3 =
  7. 7.Rohan has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  8. 8.9/10 − 1/3 =
  9. 9.Ishaan has a ribbon 2/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  10. 10.A bottle has 5/6 litre of juice. Diya drinks 7/10 litre. How much juice is left (in litres)? =
  11. 11.3/4 − 1/7 =
  12. 12.A bottle has 7/9 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  13. 13.3/5 − 1/6 =
  14. 14.5/6 − 1/4 =
  15. 15.5/6 − 1/10 =
  16. 16.6/7 − 1/3 =
  17. 17.1/3 − 3/10 =
  18. 18.A bottle has 4/5 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  19. 19.3/5 − 1/3 =
  20. 20.Anaya has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  21. 21.A bottle has 2/5 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  22. 22.Tara has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  23. 23.7/9 − 2/3 =
  24. 24.A tank is 3/4 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  25. 25.Riya has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  26. 26.1/2 − 3/10 =
  27. 27.Sara has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  28. 28.Arjun has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  29. 29.Ishaan has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  30. 30.1/4 − 1/7 =
  31. 31.7/8 − 1/4 =
  32. 32.3/5 − 1/4 =
  33. 33.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  35. 35.1/3 − 1/5 =
  36. 36.Riya has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  37. 37.Diya has a ribbon 5/6 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  38. 38.Anaya has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  39. 39.4/5 − 2/3 =
  40. 40.A bottle has 1/3 litre of juice. Vihaan drinks 1/7 litre. How much juice is left (in litres)? =

Answer key

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

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