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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 141 · 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.Rohan has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  2. 2.A tank is 3/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  3. 3.4/5 − 1/6 =
  4. 4.7/8 − 1/3 =
  5. 5.7/9 − 1/3 =
  6. 6.3/4 − 1/7 =
  7. 7.A bottle has 2/3 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  8. 8.A tank is 7/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  9. 9.3/5 − 1/6 =
  10. 10.1/3 − 1/6 =
  11. 11.A bottle has 8/9 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  12. 12.1/3 − 2/7 =
  13. 13.A bottle has 4/5 litre of juice. Meera drinks 3/10 litre. How much juice is left (in litres)? =
  14. 14.Anaya has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  15. 15.5/6 − 5/9 =
  16. 16.A tank is 1/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  17. 17.A tank is 1/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  18. 18.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  19. 19.3/4 − 2/5 =
  20. 20.1/3 − 1/9 =
  21. 21.Aarav has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  22. 22.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  23. 23.A bottle has 1/3 litre of juice. Sara drinks 2/9 litre. How much juice is left (in litres)? =
  24. 24.1/2 − 1/4 =
  25. 25.A bottle has 2/3 litre of juice. Rohan drinks 5/9 litre. How much juice is left (in litres)? =
  26. 26.A tank is 9/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.2/3 − 3/10 =
  28. 28.2/3 − 5/9 =
  29. 29.A bottle has 7/9 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  30. 30.A tank is 3/4 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  31. 31.A bottle has 5/6 litre of juice. Anaya drinks 4/9 litre. How much juice is left (in litres)? =
  32. 32.4/5 − 2/3 =
  33. 33.2/3 − 2/7 =
  34. 34.1/2 − 2/7 =
  35. 35.6/7 − 1/4 =
  36. 36.6/7 − 2/3 =
  37. 37.1/2 − 1/5 =
  38. 38.1/2 − 3/8 =
  39. 39.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  40. 40.Arjun has a ribbon 1/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =

Answer key

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

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