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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 433 · 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.A bottle has 5/6 litre of juice. Riya drinks 2/9 litre. How much juice is left (in litres)? =
  2. 2.3/5 − 1/4 =
  3. 3.A bottle has 4/7 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  4. 4.Ishaan has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  5. 5.9/10 − 4/5 =
  6. 6.5/6 − 3/5 =
  7. 7.5/8 − 1/3 =
  8. 8.1/3 − 1/7 =
  9. 9.Anaya has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  10. 10.Tara has a ribbon 1/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  11. 11.5/6 − 7/9 =
  12. 12.A tank is 1/2 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  13. 13.Rohan has a ribbon 5/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 1/6 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  15. 15.5/7 − 1/2 =
  16. 16.A tank is 3/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  17. 17.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  18. 18.1/2 − 1/5 =
  19. 19.Aarav has a ribbon 7/8 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  20. 20.5/6 − 1/4 =
  21. 21.4/5 − 1/3 =
  22. 22.A bottle has 2/5 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  23. 23.1/3 − 1/6 =
  24. 24.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  25. 25.A bottle has 8/9 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  26. 26.1/4 − 1/5 =
  27. 27.2/3 − 1/9 =
  28. 28.5/6 − 2/3 =
  29. 29.8/9 − 2/3 =
  30. 30.7/9 − 1/6 =
  31. 31.5/6 − 3/8 =
  32. 32.Arjun has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  33. 33.A bottle has 4/5 litre of juice. Diya drinks 3/4 litre. How much juice is left (in litres)? =
  34. 34.3/4 − 1/2 =
  35. 35.A bottle has 6/7 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  36. 36.2/3 − 1/7 =
  37. 37.3/4 − 5/7 =
  38. 38.4/5 − 1/6 =
  39. 39.A bottle has 7/10 litre of juice. Vihaan drinks 3/5 litre. How much juice is left (in litres)? =
  40. 40.1/2 − 3/7 =

Answer key

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

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