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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 788 · 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 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? =
  2. 2.3/4 − 3/7 =
  3. 3.2/3 − 2/7 =
  4. 4.3/4 − 5/8 =
  5. 5.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? =
  6. 6.1/2 − 1/6 =
  7. 7.2/7 − 1/4 =
  8. 8.8/9 − 1/2 =
  9. 9.5/6 − 4/9 =
  10. 10.A tank is 1/2 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  11. 11.3/4 − 1/7 =
  12. 12.Ishaan has a ribbon 3/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  13. 13.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 2/3 litre of juice. Meera drinks 5/8 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 3/4 litre of juice. Ishaan drinks 7/10 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 9/10 litre of juice. Rohan drinks 4/5 litre. How much juice is left (in litres)? =
  17. 17.A tank is 1/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 2/3 litre of juice. Anaya drinks 4/9 litre. How much juice is left (in litres)? =
  19. 19.A bottle has 5/9 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  20. 20.Kabir has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  21. 21.Meera has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  22. 22.A tank is 1/2 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.5/6 − 7/9 =
  24. 24.2/3 − 3/5 =
  25. 25.4/9 − 1/3 =
  26. 26.A tank is 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  27. 27.Vihaan has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  28. 28.2/3 − 1/10 =
  29. 29.1/2 − 2/7 =
  30. 30.Arjun has a ribbon 5/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  31. 31.A bottle has 1/3 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  32. 32.1/4 − 1/8 =
  33. 33.4/9 − 1/6 =
  34. 34.A bottle has 2/3 litre of juice. Tara drinks 3/7 litre. How much juice is left (in litres)? =
  35. 35.8/9 − 2/3 =
  36. 36.7/9 − 1/3 =
  37. 37.1/2 − 1/4 =
  38. 38.3/4 − 1/8 =
  39. 39.4/5 − 1/3 =
  40. 40.Diya has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =

Answer key

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

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