← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 386 · 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 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  2. 2.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? =
  3. 3.3/4 − 5/8 =
  4. 4.7/8 − 1/6 =
  5. 5.Ishaan has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  6. 6.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? =
  7. 7.5/6 − 7/9 =
  8. 8.A tank is 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 2/9 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  10. 10.5/6 − 4/9 =
  11. 11.5/8 − 1/4 =
  12. 12.A bottle has 2/7 litre of juice. Ishaan drinks 1/4 litre. How much juice is left (in litres)? =
  13. 13.Diya has a ribbon 1/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  14. 14.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? =
  15. 15.A tank is 7/8 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  16. 16.9/10 − 3/5 =
  17. 17.Diya has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  18. 18.9/10 − 2/5 =
  19. 19.1/2 − 1/9 =
  20. 20.A bottle has 7/10 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  21. 21.2/5 − 1/3 =
  22. 22.A bottle has 7/8 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 3/4 litre of juice. Vihaan drinks 1/10 litre. How much juice is left (in litres)? =
  24. 24.A bottle has 3/4 litre of juice. Arjun drinks 4/7 litre. How much juice is left (in litres)? =
  25. 25.Anaya has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  26. 26.Vihaan has a ribbon 8/9 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  27. 27.A tank is 1/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  28. 28.A tank is 1/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  29. 29.2/3 − 1/2 =
  30. 30.Aarav has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  31. 31.7/9 − 1/3 =
  32. 32.Riya has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  33. 33.3/4 − 1/7 =
  34. 34.A bottle has 7/10 litre of juice. Anaya drinks 1/5 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 3/7 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 6/7 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  37. 37.Diya has a ribbon 1/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  38. 38.3/8 − 1/4 =
  39. 39.5/6 − 5/8 =
  40. 40.2/3 − 1/5 =

Answer key

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

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