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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 261 · 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. 1.3/4 − 2/7 =
  2. 2.1/2 − 4/9 =
  3. 3.Kabir has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  4. 4.Vihaan has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  5. 5.1/2 − 2/5 =
  6. 6.1/2 − 1/10 =
  7. 7.Kabir has a ribbon 4/5 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  8. 8.A tank is 5/6 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  9. 9.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  10. 10.2/5 − 3/10 =
  11. 11.2/3 − 2/7 =
  12. 12.5/7 − 1/4 =
  13. 13.Tara has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  14. 14.A tank is 5/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  15. 15.Vihaan has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  16. 16.Anaya has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  17. 17.3/10 − 1/4 =
  18. 18.Vihaan has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  19. 19.Kabir has a ribbon 5/6 m long and cuts off 4/5 m. How long is the ribbon now (in m)? =
  20. 20.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  21. 21.Diya has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  22. 22.A bottle has 3/4 litre of juice. Riya drinks 4/7 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 9/10 litre of juice. Rohan drinks 3/5 litre. How much juice is left (in litres)? =
  24. 24.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? =
  25. 25.2/3 − 5/9 =
  26. 26.1/2 − 1/8 =
  27. 27.Anaya has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  28. 28.1/6 − 1/8 =
  29. 29.5/6 − 7/9 =
  30. 30.5/8 − 1/4 =
  31. 31.3/4 − 1/7 =
  32. 32.8/9 − 1/6 =
  33. 33.Sara has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  34. 34.4/7 − 1/4 =
  35. 35.9/10 − 2/5 =
  36. 36.A bottle has 1/3 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 3/7 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 3/8 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  39. 39.Anaya has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  40. 40.5/6 − 5/9 =

Answer key

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

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