← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 148 · 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.Kabir has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  2. 2.3/4 − 1/2 =
  3. 3.4/7 − 1/2 =
  4. 4.A tank is 1/2 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 1/4 litre of juice. Arjun drinks 1/8 litre. How much juice is left (in litres)? =
  6. 6.2/5 − 1/4 =
  7. 7.A bottle has 5/6 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  8. 8.A tank is 5/8 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 9/10 litre of juice. Vihaan drinks 3/5 litre. How much juice is left (in litres)? =
  10. 10.1/2 − 4/9 =
  11. 11.Kabir has a ribbon 5/6 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  12. 12.1/2 − 1/7 =
  13. 13.7/10 − 2/3 =
  14. 14.A tank is 4/9 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 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  16. 16.A tank is 5/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  17. 17.4/9 − 1/3 =
  18. 18.A bottle has 3/4 litre of juice. Arjun drinks 2/7 litre. How much juice is left (in litres)? =
  19. 19.1/3 − 1/9 =
  20. 20.A tank is 7/8 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  21. 21.9/10 − 1/2 =
  22. 22.2/3 − 2/7 =
  23. 23.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  24. 24.Arjun has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  25. 25.5/6 − 5/9 =
  26. 26.Anaya has a ribbon 1/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  27. 27.2/3 − 1/7 =
  28. 28.3/4 − 5/8 =
  29. 29.4/5 − 3/10 =
  30. 30.2/3 − 5/8 =
  31. 31.5/6 − 2/9 =
  32. 32.7/8 − 2/3 =
  33. 33.Vihaan has a ribbon 2/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  34. 34.A tank is 4/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  35. 35.Ishaan has a ribbon 1/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  36. 36.1/3 − 1/7 =
  37. 37.7/10 − 2/5 =
  38. 38.A bottle has 6/7 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  39. 39.7/9 − 1/6 =
  40. 40.2/7 − 1/4 =

Answer key

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

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