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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 340 · 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. 1.1/4 − 1/8 =
  2. 2.7/9 − 1/2 =
  3. 3.3/4 − 1/10 =
  4. 4.8/9 − 2/3 =
  5. 5.A tank is 3/5 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 − 3/8 =
  7. 7.7/10 − 1/6 =
  8. 8.Arjun has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  9. 9.3/4 − 3/10 =
  10. 10.1/2 − 2/9 =
  11. 11.3/7 − 1/4 =
  12. 12.7/9 − 1/6 =
  13. 13.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? =
  14. 14.1/2 − 1/5 =
  15. 15.A bottle has 5/8 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 3/4 litre of juice. Meera drinks 3/7 litre. How much juice is left (in litres)? =
  17. 17.5/9 − 1/2 =
  18. 18.Sara has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  19. 19.3/7 − 1/3 =
  20. 20.5/9 − 1/6 =
  21. 21.A bottle has 1/4 litre of juice. Aarav drinks 1/5 litre. How much juice is left (in litres)? =
  22. 22.5/7 − 2/3 =
  23. 23.1/2 − 4/9 =
  24. 24.5/6 − 7/9 =
  25. 25.5/7 − 1/2 =
  26. 26.A bottle has 5/6 litre of juice. Diya drinks 1/8 litre. How much juice is left (in litres)? =
  27. 27.Kabir has a ribbon 7/10 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  28. 28.1/2 − 1/9 =
  29. 29.3/5 − 1/6 =
  30. 30.Kabir has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  31. 31.A tank is 7/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  32. 32.7/9 − 2/3 =
  33. 33.Aarav has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  34. 34.2/3 − 1/9 =
  35. 35.Tara has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  36. 36.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  37. 37.4/7 − 1/3 =
  38. 38.A bottle has 5/8 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  39. 39.1/3 − 1/9 =
  40. 40.Anaya has a ribbon 6/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =

Answer key

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

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