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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 547 · 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. 1.2/3 − 2/7 =
  2. 2.A bottle has 2/3 litre of juice. Anaya drinks 1/5 litre. How much juice is left (in litres)? =
  3. 3.5/7 − 1/3 =
  4. 4.3/5 − 1/10 =
  5. 5.Rohan has a ribbon 4/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  6. 6.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  7. 7.3/5 − 1/4 =
  8. 8.5/7 − 1/4 =
  9. 9.A tank is 7/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  10. 10.A bottle has 8/9 litre of juice. Sara drinks 2/3 litre. How much juice is left (in litres)? =
  11. 11.Diya has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  12. 12.3/4 − 3/8 =
  13. 13.3/4 − 1/7 =
  14. 14.4/5 − 1/10 =
  15. 15.Sara has a ribbon 1/2 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  16. 16.1/2 − 1/7 =
  17. 17.8/9 − 2/3 =
  18. 18.2/3 − 3/10 =
  19. 19.8/9 − 1/6 =
  20. 20.1/3 − 2/9 =
  21. 21.1/2 − 3/10 =
  22. 22.7/8 − 1/4 =
  23. 23.Meera has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  24. 24.Aarav has a ribbon 2/3 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  25. 25.A tank is 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  26. 26.A tank is 7/8 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.2/3 − 3/8 =
  28. 28.1/3 − 1/10 =
  29. 29.A bottle has 4/5 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  30. 30.2/3 − 5/9 =
  31. 31.2/3 − 4/7 =
  32. 32.3/4 − 2/3 =
  33. 33.A tank is 3/4 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  35. 35.Ishaan has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  36. 36.3/4 − 5/7 =
  37. 37.7/9 − 1/2 =
  38. 38.A tank is 7/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  39. 39.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  40. 40.A bottle has 2/5 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =

Answer key

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

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