← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 299 · 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 bottle has 2/3 litre of juice. Tara drinks 3/8 litre. How much juice is left (in litres)? =
  2. 2.Arjun has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  3. 3.2/3 − 2/5 =
  4. 4.5/7 − 1/3 =
  5. 5.5/7 − 1/4 =
  6. 6.7/8 − 3/4 =
  7. 7.2/3 − 3/7 =
  8. 8.A tank is 9/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  9. 9.2/3 − 1/4 =
  10. 10.5/9 − 1/6 =
  11. 11.5/8 − 1/2 =
  12. 12.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 6/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 5/6 litre of juice. Riya drinks 5/9 litre. How much juice is left (in litres)? =
  15. 15.1/3 − 1/8 =
  16. 16.7/8 − 2/3 =
  17. 17.Anaya has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  18. 18.Ishaan has a ribbon 1/2 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  19. 19.Arjun has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  20. 20.5/7 − 1/2 =
  21. 21.Diya has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  22. 22.3/7 − 1/3 =
  23. 23.Tara has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  24. 24.1/3 − 1/7 =
  25. 25.A tank is 2/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  26. 26.1/4 − 1/7 =
  27. 27.1/5 − 1/6 =
  28. 28.5/6 − 2/5 =
  29. 29.1/2 − 3/8 =
  30. 30.A bottle has 3/5 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  31. 31.Arjun has a ribbon 5/6 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  32. 32.3/5 − 1/3 =
  33. 33.1/2 − 1/9 =
  34. 34.2/7 − 1/4 =
  35. 35.5/6 − 5/8 =
  36. 36.2/3 − 5/9 =
  37. 37.2/5 − 1/6 =
  38. 38.2/3 − 1/5 =
  39. 39.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  40. 40.A bottle has 5/6 litre of juice. Vihaan drinks 7/9 litre. How much juice is left (in litres)? =

Answer key

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

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