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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 892 · 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. 1.1/3 − 1/8 =
  2. 2.3/4 − 1/7 =
  3. 3.2/7 − 1/4 =
  4. 4.A bottle has 8/9 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  5. 5.1/3 − 2/9 =
  6. 6.7/10 − 2/5 =
  7. 7.Ishaan has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  8. 8.1/2 − 1/9 =
  9. 9.6/7 − 1/4 =
  10. 10.A tank is 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  11. 11.Ishaan has a ribbon 3/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  12. 12.5/6 − 4/5 =
  13. 13.A bottle has 7/10 litre of juice. Meera drinks 1/5 litre. How much juice is left (in litres)? =
  14. 14.A tank is 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  15. 15.2/3 − 3/5 =
  16. 16.Rohan has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  17. 17.5/7 − 1/2 =
  18. 18.A tank is 1/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  19. 19.1/2 − 1/3 =
  20. 20.2/3 − 1/9 =
  21. 21.1/2 − 1/7 =
  22. 22.5/6 − 1/5 =
  23. 23.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  24. 24.A bottle has 5/6 litre of juice. Riya drinks 1/5 litre. How much juice is left (in litres)? =
  25. 25.5/6 − 2/9 =
  26. 26.5/8 − 1/3 =
  27. 27.2/3 − 5/9 =
  28. 28.Meera has a ribbon 7/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  29. 29.2/3 − 3/7 =
  30. 30.A bottle has 3/5 litre of juice. Aarav drinks 1/10 litre. How much juice is left (in litres)? =
  31. 31.2/3 − 1/2 =
  32. 32.4/5 − 2/3 =
  33. 33.8/9 − 1/6 =
  34. 34.Diya has a ribbon 3/4 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  35. 35.Diya has a ribbon 2/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  36. 36.A bottle has 2/3 litre of juice. Meera drinks 5/9 litre. How much juice is left (in litres)? =
  37. 37.1/3 − 1/6 =
  38. 38.A bottle has 3/4 litre of juice. Riya drinks 3/5 litre. How much juice is left (in litres)? =
  39. 39.8/9 − 5/6 =
  40. 40.A bottle has 1/2 litre of juice. Sara drinks 1/7 litre. How much juice is left (in litres)? =

Answer key

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

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