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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 668 · 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 bottle has 4/9 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  2. 2.Meera has a ribbon 4/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  3. 3.Vihaan has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  4. 4.9/10 − 2/5 =
  5. 5.7/10 − 3/5 =
  6. 6.A bottle has 9/10 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  7. 7.2/3 − 4/9 =
  8. 8.7/8 − 2/3 =
  9. 9.1/2 − 2/9 =
  10. 10.1/6 − 1/10 =
  11. 11.A bottle has 9/10 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  12. 12.5/6 − 1/5 =
  13. 13.9/10 − 4/5 =
  14. 14.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  15. 15.5/8 − 1/6 =
  16. 16.Sara has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  17. 17.4/5 − 3/10 =
  18. 18.A tank is 5/6 full of water. Then water filling 7/9 of the tank is used. What fraction of the tank is full now? =
  19. 19.A bottle has 5/6 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  20. 20.A bottle has 7/9 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  21. 21.A tank is 1/2 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  22. 22.Anaya has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  23. 23.Riya has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  24. 24.Kabir has a ribbon 7/8 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  25. 25.1/2 − 3/7 =
  26. 26.Sara has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  27. 27.2/3 − 5/8 =
  28. 28.A tank is 1/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  29. 29.A tank is 6/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  30. 30.4/5 − 7/10 =
  31. 31.5/9 − 1/3 =
  32. 32.3/4 − 5/7 =
  33. 33.3/4 − 3/5 =
  34. 34.8/9 − 1/6 =
  35. 35.Meera has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  36. 36.Meera has a ribbon 7/8 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  37. 37.7/10 − 1/4 =
  38. 38.A bottle has 9/10 litre of juice. Anaya drinks 4/5 litre. How much juice is left (in litres)? =
  39. 39.A tank is 1/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  40. 40.3/4 − 5/8 =

Answer key

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

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