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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 99 · 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. 1.3/4 − 3/8 =
  2. 2.A bottle has 1/2 litre of juice. Kabir drinks 2/5 litre. How much juice is left (in litres)? =
  3. 3.5/9 − 1/2 =
  4. 4.1/2 − 1/4 =
  5. 5.2/3 − 2/9 =
  6. 6.2/3 − 1/8 =
  7. 7.A bottle has 2/3 litre of juice. Vihaan drinks 1/9 litre. How much juice is left (in litres)? =
  8. 8.1/4 − 1/7 =
  9. 9.2/5 − 1/4 =
  10. 10.A bottle has 3/4 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 5/9 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  12. 12.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? =
  13. 13.A bottle has 5/6 litre of juice. Arjun drinks 4/9 litre. How much juice is left (in litres)? =
  14. 14.3/4 − 1/7 =
  15. 15.7/9 − 1/3 =
  16. 16.A bottle has 6/7 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  17. 17.A bottle has 7/8 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  18. 18.7/10 − 1/5 =
  19. 19.Vihaan has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  20. 20.1/2 − 1/8 =
  21. 21.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? =
  22. 22.Tara has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  23. 23.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  24. 24.Anaya has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  25. 25.1/6 − 1/9 =
  26. 26.A bottle has 2/3 litre of juice. Anaya drinks 1/7 litre. How much juice is left (in litres)? =
  27. 27.5/6 − 4/9 =
  28. 28.5/6 − 3/8 =
  29. 29.4/5 − 2/3 =
  30. 30.3/8 − 1/6 =
  31. 31.A bottle has 3/4 litre of juice. Meera drinks 3/7 litre. How much juice is left (in litres)? =
  32. 32.1/3 − 2/9 =
  33. 33.Tara has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  34. 34.5/7 − 1/3 =
  35. 35.Tara has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  36. 36.8/9 − 1/6 =
  37. 37.7/8 − 1/6 =
  38. 38.1/2 − 1/9 =
  39. 39.A tank is 6/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  40. 40.A tank is 1/2 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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