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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 118 · 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. 1.7/9 − 1/6 =
  2. 2.A bottle has 5/6 litre of juice. Sara drinks 1/8 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 3/4 litre of juice. Riya drinks 3/8 litre. How much juice is left (in litres)? =
  4. 4.A tank is 5/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  5. 5.2/5 − 1/4 =
  6. 6.A bottle has 9/10 litre of juice. Riya drinks 3/5 litre. How much juice is left (in litres)? =
  7. 7.4/5 − 3/10 =
  8. 8.Anaya has a ribbon 3/4 m long and cuts off 5/7 m. How long is the ribbon now (in m)? =
  9. 9.A bottle has 9/10 litre of juice. Ishaan drinks 2/5 litre. How much juice is left (in litres)? =
  10. 10.2/3 − 1/7 =
  11. 11.1/2 − 4/9 =
  12. 12.4/5 − 1/10 =
  13. 13.5/6 − 2/5 =
  14. 14.A bottle has 7/8 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  15. 15.2/3 − 3/7 =
  16. 16.3/5 − 3/10 =
  17. 17.Kabir has a ribbon 2/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  18. 18.8/9 − 5/6 =
  19. 19.7/9 − 2/3 =
  20. 20.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  21. 21.A bottle has 7/8 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  22. 22.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  23. 23.Ishaan has a ribbon 1/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  24. 24.3/4 − 5/8 =
  25. 25.6/7 − 1/4 =
  26. 26.Aarav has a ribbon 3/4 m long and cuts off 5/7 m. How long is the ribbon now (in m)? =
  27. 27.A bottle has 3/4 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  28. 28.A tank is 2/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  29. 29.3/4 − 3/5 =
  30. 30.A bottle has 4/5 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  31. 31.2/3 − 3/8 =
  32. 32.A bottle has 1/3 litre of juice. Ishaan drinks 1/9 litre. How much juice is left (in litres)? =
  33. 33.Vihaan has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  34. 34.Vihaan has a ribbon 1/3 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  35. 35.5/9 − 1/3 =
  36. 36.7/10 − 1/2 =
  37. 37.A bottle has 7/10 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  38. 38.Tara has a ribbon 4/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  39. 39.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? =
  40. 40.4/9 − 1/6 =

Answer key

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

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