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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 815 · 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 − 5/8 =
  2. 2.Aarav has a ribbon 1/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  3. 3.1/2 − 4/9 =
  4. 4.A bottle has 2/3 litre of juice. Riya drinks 2/7 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 2/3 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  6. 6.A tank is 3/4 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  7. 7.7/9 − 1/3 =
  8. 8.Aarav has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  9. 9.A bottle has 2/3 litre of juice. Aarav drinks 2/7 litre. How much juice is left (in litres)? =
  10. 10.3/4 − 2/3 =
  11. 11.2/3 − 1/10 =
  12. 12.2/5 − 3/10 =
  13. 13.5/8 − 1/6 =
  14. 14.5/9 − 1/2 =
  15. 15.1/2 − 1/8 =
  16. 16.4/5 − 1/4 =
  17. 17.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 2/3 litre of juice. Ishaan drinks 5/9 litre. How much juice is left (in litres)? =
  19. 19.1/3 − 1/10 =
  20. 20.1/4 − 1/6 =
  21. 21.Aarav has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  22. 22.Meera has a ribbon 3/4 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  23. 23.A tank is 2/3 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  24. 24.2/3 − 2/5 =
  25. 25.5/7 − 1/4 =
  26. 26.Meera has a ribbon 9/10 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  27. 27.3/4 − 5/7 =
  28. 28.A bottle has 3/4 litre of juice. Riya drinks 1/5 litre. How much juice is left (in litres)? =
  29. 29.5/9 − 1/3 =
  30. 30.7/8 − 1/4 =
  31. 31.5/6 − 5/9 =
  32. 32.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? =
  33. 33.1/4 − 1/7 =
  34. 34.A bottle has 7/8 litre of juice. Sara drinks 5/6 litre. How much juice is left (in litres)? =
  35. 35.3/10 − 1/6 =
  36. 36.2/3 − 1/7 =
  37. 37.3/10 − 1/4 =
  38. 38.A bottle has 9/10 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 9/10 litre of juice. Aarav drinks 5/6 litre. How much juice is left (in litres)? =
  40. 40.Meera has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =

Answer key

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

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