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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 881 · 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 3/4 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  2. 2.2/3 − 1/9 =
  3. 3.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  4. 4.5/7 − 1/3 =
  5. 5.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  6. 6.3/10 − 1/6 =
  7. 7.A bottle has 1/3 litre of juice. Ishaan drinks 1/5 litre. How much juice is left (in litres)? =
  8. 8.8/9 − 1/6 =
  9. 9.7/9 − 1/2 =
  10. 10.6/7 − 2/3 =
  11. 11.Arjun has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  12. 12.3/8 − 1/4 =
  13. 13.1/3 − 1/7 =
  14. 14.Ishaan has a ribbon 6/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  15. 15.1/6 − 1/9 =
  16. 16.A bottle has 2/3 litre of juice. Meera drinks 2/7 litre. How much juice is left (in litres)? =
  17. 17.7/8 − 2/3 =
  18. 18.A tank is 2/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  19. 19.8/9 − 1/2 =
  20. 20.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? =
  21. 21.8/9 − 1/3 =
  22. 22.7/9 − 1/6 =
  23. 23.6/7 − 3/4 =
  24. 24.A tank is 1/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  25. 25.3/5 − 1/10 =
  26. 26.1/5 − 1/10 =
  27. 27.A bottle has 1/2 litre of juice. Anaya drinks 2/9 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 1/6 litre of juice. Arjun drinks 1/10 litre. How much juice is left (in litres)? =
  29. 29.7/8 − 3/4 =
  30. 30.Kabir has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  31. 31.2/3 − 4/7 =
  32. 32.A bottle has 2/3 litre of juice. Rohan drinks 5/9 litre. How much juice is left (in litres)? =
  33. 33.2/3 − 1/5 =
  34. 34.3/4 − 1/5 =
  35. 35.Aarav has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.Meera has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  37. 37.Ishaan has a ribbon 3/4 m long and cuts off 5/7 m. How long is the ribbon now (in m)? =
  38. 38.4/7 − 1/4 =
  39. 39.A bottle has 1/2 litre of juice. Kabir drinks 4/9 litre. How much juice is left (in litres)? =
  40. 40.Diya has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =

Answer key

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

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