← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 666 · 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. 1.3/5 − 1/3 =
  2. 2.Arjun has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  3. 3.2/3 − 1/7 =
  4. 4.1/5 − 1/10 =
  5. 5.Rohan has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  6. 6.A bottle has 3/4 litre of juice. Riya drinks 7/10 litre. How much juice is left (in litres)? =
  7. 7.2/3 − 5/9 =
  8. 8.1/2 − 3/8 =
  9. 9.2/3 − 3/8 =
  10. 10.A bottle has 4/7 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 3/4 litre of juice. Tara drinks 5/8 litre. How much juice is left (in litres)? =
  12. 12.3/10 − 1/6 =
  13. 13.A bottle has 4/5 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  14. 14.Diya has a ribbon 5/6 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  15. 15.Meera has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  16. 16.5/6 − 3/10 =
  17. 17.5/6 − 1/2 =
  18. 18.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  19. 19.7/9 − 1/3 =
  20. 20.3/7 − 1/3 =
  21. 21.Vihaan has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  22. 22.7/10 − 3/5 =
  23. 23.2/5 − 1/4 =
  24. 24.A bottle has 9/10 litre of juice. Vihaan drinks 1/5 litre. How much juice is left (in litres)? =
  25. 25.A tank is 9/10 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  26. 26.5/6 − 2/5 =
  27. 27.5/7 − 2/3 =
  28. 28.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? =
  29. 29.6/7 − 1/3 =
  30. 30.9/10 − 3/5 =
  31. 31.9/10 − 2/5 =
  32. 32.5/8 − 1/2 =
  33. 33.A tank is 8/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  34. 34.7/10 − 1/2 =
  35. 35.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? =
  36. 36.A tank is 7/10 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  37. 37.5/6 − 4/9 =
  38. 38.Tara has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  39. 39.4/5 − 1/6 =
  40. 40.1/2 − 4/9 =

Answer key

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

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