← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 492 · 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 tank is 5/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  2. 2.6/7 − 2/3 =
  3. 3.1/3 − 1/7 =
  4. 4.Vihaan has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  5. 5.A tank is 7/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  6. 6.1/3 − 1/10 =
  7. 7.A bottle has 2/3 litre of juice. Meera drinks 1/9 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 5/6 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  9. 9.5/7 − 1/2 =
  10. 10.A bottle has 5/8 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  11. 11.Riya has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  12. 12.5/6 − 1/10 =
  13. 13.4/5 − 1/10 =
  14. 14.Aarav has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  15. 15.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  16. 16.A bottle has 9/10 litre of juice. Ishaan drinks 3/4 litre. How much juice is left (in litres)? =
  17. 17.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  18. 18.A tank is 4/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  19. 19.2/3 − 3/8 =
  20. 20.5/8 − 1/4 =
  21. 21.6/7 − 1/2 =
  22. 22.A bottle has 9/10 litre of juice. Vihaan drinks 1/5 litre. How much juice is left (in litres)? =
  23. 23.Arjun has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  24. 24.Arjun has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  25. 25.1/2 − 1/7 =
  26. 26.4/9 − 1/3 =
  27. 27.6/7 − 1/4 =
  28. 28.4/5 − 1/3 =
  29. 29.A bottle has 2/5 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  30. 30.5/7 − 2/3 =
  31. 31.Anaya has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  32. 32.7/10 − 1/6 =
  33. 33.3/5 − 1/6 =
  34. 34.A bottle has 5/9 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 5/6 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  36. 36.3/10 − 1/4 =
  37. 37.4/5 − 1/2 =
  38. 38.1/2 − 1/4 =
  39. 39.Anaya has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  40. 40.2/3 − 4/9 =

Answer key

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

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