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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 301 · 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. 1.5/8 − 1/6 =
  2. 2.5/6 − 1/10 =
  3. 3.3/8 − 1/6 =
  4. 4.A tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 2/3 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  6. 6.3/5 − 1/2 =
  7. 7.Rohan has a ribbon 5/6 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  8. 8.Meera has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  9. 9.A tank is 5/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  10. 10.5/8 − 1/2 =
  11. 11.2/3 − 1/5 =
  12. 12.Rohan has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  13. 13.4/7 − 1/2 =
  14. 14.Anaya has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  15. 15.A bottle has 1/2 litre of juice. Tara drinks 3/8 litre. How much juice is left (in litres)? =
  16. 16.6/7 − 1/3 =
  17. 17.1/2 − 1/5 =
  18. 18.A bottle has 1/2 litre of juice. Riya drinks 1/5 litre. How much juice is left (in litres)? =
  19. 19.1/3 − 2/7 =
  20. 20.3/4 − 3/7 =
  21. 21.4/7 − 1/4 =
  22. 22.3/4 − 1/7 =
  23. 23.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  24. 24.Meera has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  25. 25.4/5 − 7/10 =
  26. 26.A bottle has 5/9 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  27. 27.3/10 − 1/5 =
  28. 28.3/4 − 2/5 =
  29. 29.Aarav has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  30. 30.A tank is 7/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  31. 31.Vihaan has a ribbon 2/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  32. 32.3/7 − 1/3 =
  33. 33.Tara has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  34. 34.5/6 − 5/9 =
  35. 35.A bottle has 1/6 litre of juice. Arjun drinks 1/9 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 2/3 litre of juice. Sara drinks 3/10 litre. How much juice is left (in litres)? =
  37. 37.Tara has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  38. 38.Tara has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  39. 39.5/6 − 3/5 =
  40. 40.Tara has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =

Answer key

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

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