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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 171 · 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.A tank is 7/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  2. 2.A tank is 5/6 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  3. 3.A bottle has 4/5 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  4. 4.8/9 − 5/6 =
  5. 5.A tank is 3/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  6. 6.A bottle has 3/4 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  7. 7.1/2 − 1/5 =
  8. 8.8/9 − 1/3 =
  9. 9.Tara has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  10. 10.3/10 − 1/5 =
  11. 11.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? =
  12. 12.3/5 − 1/10 =
  13. 13.2/3 − 5/8 =
  14. 14.A tank is 1/2 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  15. 15.7/10 − 3/5 =
  16. 16.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  17. 17.7/8 − 3/4 =
  18. 18.A bottle has 5/8 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  19. 19.A bottle has 2/3 litre of juice. Aarav drinks 1/8 litre. How much juice is left (in litres)? =
  20. 20.Vihaan has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  21. 21.1/2 − 2/7 =
  22. 22.7/9 − 1/2 =
  23. 23.2/5 − 3/10 =
  24. 24.7/8 − 5/6 =
  25. 25.1/3 − 2/9 =
  26. 26.5/6 − 7/9 =
  27. 27.Vihaan has a ribbon 2/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  28. 28.A tank is 5/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  29. 29.A tank is 3/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  30. 30.2/3 − 4/9 =
  31. 31.9/10 − 4/5 =
  32. 32.4/9 − 1/6 =
  33. 33.A tank is 7/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  34. 34.2/3 − 2/7 =
  35. 35.A bottle has 5/9 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  36. 36.Aarav has a ribbon 5/6 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  37. 37.Ishaan has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  38. 38.3/5 − 3/10 =
  39. 39.1/3 − 1/7 =
  40. 40.2/3 − 1/8 =

Answer key

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

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