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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 508 · 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. 1.7/8 − 1/4 =
  2. 2.1/3 − 2/7 =
  3. 3.Kabir has a ribbon 9/10 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  4. 4.1/3 − 1/10 =
  5. 5.A tank is 3/4 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  6. 6.Diya has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  7. 7.1/6 − 1/8 =
  8. 8.5/6 − 2/3 =
  9. 9.A tank is 1/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  10. 10.Kabir has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  11. 11.5/6 − 7/10 =
  12. 12.Anaya has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  13. 13.7/8 − 1/6 =
  14. 14.Tara has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  15. 15.A tank is 4/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  16. 16.A bottle has 6/7 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  17. 17.Rohan has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  18. 18.Sara has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  19. 19.1/3 − 1/8 =
  20. 20.Anaya has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  21. 21.6/7 − 1/2 =
  22. 22.A tank is 5/6 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  23. 23.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  24. 24.3/5 − 1/6 =
  25. 25.5/7 − 2/3 =
  26. 26.6/7 − 3/4 =
  27. 27.A tank is 8/9 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  28. 28.3/4 − 1/6 =
  29. 29.A tank is 3/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  30. 30.3/4 − 2/3 =
  31. 31.7/9 − 1/3 =
  32. 32.A bottle has 9/10 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  33. 33.5/8 − 1/2 =
  34. 34.7/10 − 2/3 =
  35. 35.2/3 − 3/5 =
  36. 36.3/5 − 3/10 =
  37. 37.4/5 − 7/10 =
  38. 38.A bottle has 5/6 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  39. 39.A tank is 3/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  40. 40.1/3 − 2/9 =

Answer key

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

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