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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 833 · 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 5/8 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 5/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  3. 3.1/6 − 1/10 =
  4. 4.Diya has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  5. 5.7/10 − 1/4 =
  6. 6.7/9 − 1/6 =
  7. 7.7/9 − 2/3 =
  8. 8.3/8 − 1/6 =
  9. 9.4/5 − 7/10 =
  10. 10.1/3 − 2/9 =
  11. 11.7/8 − 3/4 =
  12. 12.5/9 − 1/2 =
  13. 13.A bottle has 6/7 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  14. 14.A bottle has 1/5 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 3/4 litre of juice. Vihaan drinks 5/7 litre. How much juice is left (in litres)? =
  16. 16.Anaya has a ribbon 3/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  17. 17.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 2/3 litre of juice. Vihaan drinks 4/7 litre. How much juice is left (in litres)? =
  19. 19.1/3 − 1/4 =
  20. 20.2/3 − 3/10 =
  21. 21.3/10 − 1/4 =
  22. 22.2/7 − 1/4 =
  23. 23.A tank is 2/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  24. 24.9/10 − 4/5 =
  25. 25.Ishaan has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  26. 26.A tank is 9/10 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.1/3 − 3/10 =
  28. 28.5/7 − 1/3 =
  29. 29.1/2 − 3/8 =
  30. 30.Diya has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  31. 31.1/3 − 1/6 =
  32. 32.2/3 − 4/7 =
  33. 33.Ishaan has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  34. 34.Arjun has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  35. 35.3/5 − 1/2 =
  36. 36.6/7 − 2/3 =
  37. 37.1/4 − 1/6 =
  38. 38.Diya has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  39. 39.Vihaan has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 5/6 litre of juice. Arjun drinks 2/9 litre. How much juice is left (in litres)? =

Answer key

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

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