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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 52 · 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 − 3/5 =
  2. 2.Aarav has a ribbon 3/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  3. 3.3/4 − 5/8 =
  4. 4.1/3 − 1/9 =
  5. 5.Vihaan has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  6. 6.5/7 − 1/2 =
  7. 7.A bottle has 1/2 litre of juice. Aarav drinks 2/5 litre. How much juice is left (in litres)? =
  8. 8.5/6 − 1/9 =
  9. 9.Anaya has a ribbon 9/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  10. 10.1/4 − 1/5 =
  11. 11.Tara has a ribbon 7/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  12. 12.7/9 − 1/3 =
  13. 13.A bottle has 3/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  14. 14.2/9 − 1/6 =
  15. 15.Aarav has a ribbon 2/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  16. 16.1/2 − 3/7 =
  17. 17.Anaya has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  18. 18.5/7 − 1/4 =
  19. 19.A bottle has 1/2 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  20. 20.A bottle has 3/5 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  21. 21.6/7 − 1/4 =
  22. 22.Sara has a ribbon 4/5 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  23. 23.4/5 − 2/3 =
  24. 24.5/6 − 4/9 =
  25. 25.5/6 − 7/9 =
  26. 26.3/4 − 1/3 =
  27. 27.A bottle has 1/3 litre of juice. Tara drinks 2/9 litre. How much juice is left (in litres)? =
  28. 28.Kabir has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 3/4 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  30. 30.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  31. 31.7/9 − 2/3 =
  32. 32.A bottle has 4/5 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 5/8 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  34. 34.1/4 − 1/7 =
  35. 35.8/9 − 1/3 =
  36. 36.A bottle has 8/9 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  37. 37.7/8 − 5/6 =
  38. 38.A bottle has 2/3 litre of juice. Riya drinks 3/8 litre. How much juice is left (in litres)? =
  39. 39.Tara has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  40. 40.A tank is 5/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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