← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 207 · 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 − 4/7 =
  2. 2.Aarav has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  3. 3.9/10 − 3/4 =
  4. 4.3/4 − 3/5 =
  5. 5.4/7 − 1/2 =
  6. 6.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  7. 7.7/10 − 1/4 =
  8. 8.Sara has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  9. 9.A bottle has 2/5 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  10. 10.1/3 − 1/5 =
  11. 11.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  12. 12.4/5 − 1/4 =
  13. 13.A tank is 7/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  14. 14.5/8 − 1/4 =
  15. 15.3/7 − 1/3 =
  16. 16.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? =
  17. 17.2/3 − 5/9 =
  18. 18.8/9 − 2/3 =
  19. 19.3/4 − 2/5 =
  20. 20.7/10 − 3/5 =
  21. 21.Anaya has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  22. 22.Aarav has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  23. 23.A bottle has 1/6 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  24. 24.A bottle has 3/4 litre of juice. Arjun drinks 7/10 litre. How much juice is left (in litres)? =
  25. 25.A tank is 5/6 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  26. 26.Tara has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  27. 27.Anaya has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  28. 28.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  29. 29.5/9 − 1/2 =
  30. 30.4/7 − 1/4 =
  31. 31.4/9 − 1/6 =
  32. 32.Kabir has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  33. 33.3/4 − 1/2 =
  34. 34.7/8 − 3/4 =
  35. 35.Aarav has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  36. 36.7/10 − 2/3 =
  37. 37.A tank is 9/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  38. 38.6/7 − 2/3 =
  39. 39.A tank is 3/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  40. 40.5/6 − 4/9 =

Answer key

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

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