← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 58 · 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. 1.1/4 − 1/5 =
  2. 2.2/7 − 1/4 =
  3. 3.1/4 − 1/10 =
  4. 4.7/9 − 1/2 =
  5. 5.5/6 − 4/9 =
  6. 6.4/5 − 1/6 =
  7. 7.Rohan has a ribbon 3/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  8. 8.9/10 − 1/3 =
  9. 9.1/2 − 1/8 =
  10. 10.7/10 − 1/2 =
  11. 11.1/5 − 1/10 =
  12. 12.Ishaan has a ribbon 3/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  13. 13.A bottle has 3/4 litre of juice. Anaya drinks 5/7 litre. How much juice is left (in litres)? =
  14. 14.1/2 − 3/8 =
  15. 15.A bottle has 5/6 litre of juice. Anaya drinks 3/5 litre. How much juice is left (in litres)? =
  16. 16.9/10 − 3/5 =
  17. 17.3/5 − 1/10 =
  18. 18.3/4 − 1/10 =
  19. 19.A bottle has 2/3 litre of juice. Meera drinks 1/7 litre. How much juice is left (in litres)? =
  20. 20.7/10 − 3/5 =
  21. 21.6/7 − 1/3 =
  22. 22.A tank is 1/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  23. 23.2/3 − 1/7 =
  24. 24.9/10 − 1/5 =
  25. 25.5/7 − 1/4 =
  26. 26.5/9 − 1/2 =
  27. 27.A bottle has 8/9 litre of juice. Arjun drinks 2/3 litre. How much juice is left (in litres)? =
  28. 28.8/9 − 2/3 =
  29. 29.5/6 − 1/9 =
  30. 30.A tank is 1/2 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  31. 31.Anaya has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  32. 32.1/2 − 1/4 =
  33. 33.4/9 − 1/3 =
  34. 34.A tank is 1/2 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  35. 35.Kabir has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  36. 36.Rohan has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  37. 37.5/7 − 1/2 =
  38. 38.A bottle has 7/9 litre of juice. Vihaan drinks 2/3 litre. How much juice is left (in litres)? =
  39. 39.Rohan has a ribbon 9/10 m long and cuts off 4/5 m. How long is the ribbon now (in m)? =
  40. 40.1/3 − 1/6 =

Answer key

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

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