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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 482 · 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. 1.5/6 − 4/5 =
  2. 2.A bottle has 9/10 litre of juice. Riya drinks 4/5 litre. How much juice is left (in litres)? =
  3. 3.5/6 − 5/9 =
  4. 4.2/3 − 2/7 =
  5. 5.Diya has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  6. 6.A bottle has 4/5 litre of juice. Tara drinks 3/10 litre. How much juice is left (in litres)? =
  7. 7.1/3 − 1/7 =
  8. 8.4/5 − 1/4 =
  9. 9.A bottle has 1/2 litre of juice. Aarav drinks 1/7 litre. How much juice is left (in litres)? =
  10. 10.7/10 − 2/5 =
  11. 11.5/9 − 1/2 =
  12. 12.A bottle has 5/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  13. 13.A tank is 1/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  14. 14.3/4 − 2/5 =
  15. 15.3/4 − 3/5 =
  16. 16.5/6 − 2/9 =
  17. 17.7/9 − 1/3 =
  18. 18.Tara has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  19. 19.2/9 − 1/6 =
  20. 20.5/7 − 1/2 =
  21. 21.A bottle has 2/3 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  22. 22.8/9 − 5/6 =
  23. 23.A bottle has 3/4 litre of juice. Rohan drinks 2/7 litre. How much juice is left (in litres)? =
  24. 24.A tank is 9/10 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.A bottle has 7/8 litre of juice. Ishaan drinks 3/4 litre. How much juice is left (in litres)? =
  26. 26.Tara has a ribbon 9/10 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  27. 27.5/6 − 1/3 =
  28. 28.3/10 − 1/4 =
  29. 29.3/10 − 1/6 =
  30. 30.1/3 − 1/5 =
  31. 31.Meera has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  32. 32.A bottle has 3/4 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 3/10 litre of juice. Ishaan drinks 1/5 litre. How much juice is left (in litres)? =
  34. 34.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? =
  35. 35.A bottle has 5/6 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 7/10 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  37. 37.Kabir has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  38. 38.3/4 − 1/7 =
  39. 39.Ishaan has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  40. 40.3/4 − 4/7 =

Answer key

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

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