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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 172 · 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.Tara has a ribbon 2/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  2. 2.A tank is 1/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  3. 3.5/6 − 2/3 =
  4. 4.A tank is 2/3 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 8/9 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  6. 6.2/3 − 1/6 =
  7. 7.A tank is 4/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 7/9 litre of juice. Sara drinks 2/3 litre. How much juice is left (in litres)? =
  9. 9.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  10. 10.1/4 − 1/8 =
  11. 11.A bottle has 4/5 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  12. 12.Anaya has a ribbon 1/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  13. 13.A bottle has 9/10 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  14. 14.7/8 − 3/4 =
  15. 15.A bottle has 1/3 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  16. 16.6/7 − 3/4 =
  17. 17.A bottle has 8/9 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  18. 18.3/5 − 3/10 =
  19. 19.A bottle has 3/5 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  20. 20.5/6 − 1/9 =
  21. 21.Meera has a ribbon 3/4 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  22. 22.Tara has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  23. 23.2/3 − 1/8 =
  24. 24.A bottle has 9/10 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 5/7 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  26. 26.3/7 − 1/3 =
  27. 27.A bottle has 8/9 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 2/3 litre of juice. Vihaan drinks 2/9 litre. How much juice is left (in litres)? =
  29. 29.2/5 − 1/4 =
  30. 30.A bottle has 5/6 litre of juice. Tara drinks 4/9 litre. How much juice is left (in litres)? =
  31. 31.Rohan has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  32. 32.Sara has a ribbon 5/6 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  33. 33.Riya has a ribbon 3/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  34. 34.7/8 − 1/2 =
  35. 35.Ishaan has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  36. 36.A bottle has 1/3 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =
  37. 37.9/10 − 1/5 =
  38. 38.3/4 − 7/10 =
  39. 39.4/9 − 1/3 =
  40. 40.Aarav has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =

Answer key

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

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