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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 927 · 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.Anaya has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  2. 2.Tara has a ribbon 6/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  3. 3.Diya has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  4. 4.3/4 − 3/8 =
  5. 5.9/10 − 2/3 =
  6. 6.3/5 − 3/10 =
  7. 7.3/10 − 1/4 =
  8. 8.5/6 − 3/8 =
  9. 9.Rohan has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  10. 10.Ishaan has a ribbon 1/2 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  11. 11.1/3 − 1/6 =
  12. 12.A tank is 3/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  13. 13.8/9 − 1/2 =
  14. 14.A bottle has 3/4 litre of juice. Rohan drinks 1/5 litre. How much juice is left (in litres)? =
  15. 15.7/9 − 2/3 =
  16. 16.A bottle has 5/6 litre of juice. Aarav drinks 7/9 litre. How much juice is left (in litres)? =
  17. 17.1/3 − 1/5 =
  18. 18.A tank is 5/6 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  19. 19.2/3 − 5/8 =
  20. 20.7/8 − 2/3 =
  21. 21.8/9 − 2/3 =
  22. 22.6/7 − 2/3 =
  23. 23.3/4 − 3/7 =
  24. 24.4/7 − 1/2 =
  25. 25.A tank is 5/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  26. 26.A bottle has 7/10 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  27. 27.2/3 − 2/9 =
  28. 28.A bottle has 2/3 litre of juice. Riya drinks 3/8 litre. How much juice is left (in litres)? =
  29. 29.4/5 − 1/10 =
  30. 30.2/7 − 1/4 =
  31. 31.A bottle has 7/8 litre of juice. Diya drinks 3/4 litre. How much juice is left (in litres)? =
  32. 32.7/9 − 1/3 =
  33. 33.1/6 − 1/9 =
  34. 34.1/2 − 2/9 =
  35. 35.Diya has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.3/4 − 1/7 =
  37. 37.Diya has a ribbon 9/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  38. 38.8/9 − 1/3 =
  39. 39.A tank is 7/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  40. 40.A bottle has 2/7 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =

Answer key

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

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