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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 587 · 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.Kabir has a ribbon 5/6 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  2. 2.Sara has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  3. 3.4/9 − 1/6 =
  4. 4.A bottle has 3/4 litre of juice. Aarav drinks 3/5 litre. How much juice is left (in litres)? =
  5. 5.1/4 − 1/8 =
  6. 6.A bottle has 2/3 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  7. 7.7/8 − 1/6 =
  8. 8.2/3 − 1/5 =
  9. 9.3/4 − 3/7 =
  10. 10.3/4 − 2/5 =
  11. 11.A tank is 5/6 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  12. 12.A bottle has 1/2 litre of juice. Kabir drinks 1/9 litre. How much juice is left (in litres)? =
  13. 13.Aarav has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  14. 14.A tank is 6/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  15. 15.Kabir has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 1/4 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  17. 17.Vihaan has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  18. 18.4/5 − 3/10 =
  19. 19.7/8 − 1/2 =
  20. 20.A tank is 2/3 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  21. 21.5/6 − 1/9 =
  22. 22.Kabir has a ribbon 3/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  23. 23.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  24. 24.A tank is 3/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  25. 25.2/3 − 4/9 =
  26. 26.Meera has a ribbon 9/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  27. 27.5/6 − 7/9 =
  28. 28.6/7 − 1/3 =
  29. 29.3/4 − 2/3 =
  30. 30.7/10 − 2/3 =
  31. 31.9/10 − 2/3 =
  32. 32.7/10 − 1/6 =
  33. 33.5/8 − 1/4 =
  34. 34.1/4 − 1/5 =
  35. 35.3/4 − 1/5 =
  36. 36.A tank is 7/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  37. 37.A bottle has 1/3 litre of juice. Ishaan drinks 1/7 litre. How much juice is left (in litres)? =
  38. 38.4/5 − 1/3 =
  39. 39.5/6 − 3/10 =
  40. 40.Arjun has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =

Answer key

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

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