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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 39 · 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. 1.5/6 − 7/9 =
  2. 2.3/7 − 1/4 =
  3. 3.1/3 − 2/9 =
  4. 4.8/9 − 1/3 =
  5. 5.1/5 − 1/10 =
  6. 6.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  7. 7.Aarav has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  8. 8.7/8 − 1/6 =
  9. 9.Anaya has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  10. 10.A bottle has 5/6 litre of juice. Riya drinks 7/9 litre. How much juice is left (in litres)? =
  11. 11.A tank is 5/6 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  12. 12.8/9 − 5/6 =
  13. 13.Ishaan has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  14. 14.Arjun has a ribbon 8/9 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  15. 15.2/7 − 1/4 =
  16. 16.A tank is 8/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  17. 17.Anaya has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  18. 18.9/10 − 1/5 =
  19. 19.2/3 − 5/8 =
  20. 20.Vihaan has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  21. 21.Sara has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  22. 22.5/6 − 1/4 =
  23. 23.4/5 − 1/10 =
  24. 24.4/5 − 3/10 =
  25. 25.8/9 − 2/3 =
  26. 26.A tank is 9/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  27. 27.1/2 − 1/8 =
  28. 28.3/5 − 1/3 =
  29. 29.A bottle has 1/2 litre of juice. Vihaan drinks 3/8 litre. How much juice is left (in litres)? =
  30. 30.5/6 − 3/4 =
  31. 31.4/7 − 1/2 =
  32. 32.A bottle has 4/5 litre of juice. Rohan drinks 7/10 litre. How much juice is left (in litres)? =
  33. 33.1/4 − 1/7 =
  34. 34.1/2 − 2/9 =
  35. 35.3/7 − 1/3 =
  36. 36.1/2 − 1/6 =
  37. 37.9/10 − 5/6 =
  38. 38.3/8 − 1/3 =
  39. 39.2/3 − 3/8 =
  40. 40.2/3 − 2/7 =

Answer key

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

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