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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 432 · 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. 1.7/9 − 2/3 =
  2. 2.Meera has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  3. 3.9/10 − 1/4 =
  4. 4.Tara has a ribbon 6/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  5. 5.2/5 − 3/10 =
  6. 6.1/2 − 1/9 =
  7. 7.A bottle has 5/6 litre of juice. Vihaan drinks 7/9 litre. How much juice is left (in litres)? =
  8. 8.3/4 − 3/7 =
  9. 9.Sara has a ribbon 1/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  10. 10.Diya has a ribbon 1/3 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  11. 11.Ishaan has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 3/4 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  13. 13.2/3 − 1/7 =
  14. 14.1/2 − 1/10 =
  15. 15.8/9 − 1/6 =
  16. 16.2/3 − 1/2 =
  17. 17.4/5 − 3/10 =
  18. 18.5/6 − 4/9 =
  19. 19.5/6 − 4/5 =
  20. 20.A bottle has 3/4 litre of juice. Riya drinks 4/7 litre. How much juice is left (in litres)? =
  21. 21.2/9 − 1/6 =
  22. 22.A tank is 3/4 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.7/10 − 1/5 =
  24. 24.2/3 − 5/9 =
  25. 25.A bottle has 5/6 litre of juice. Rohan drinks 1/9 litre. How much juice is left (in litres)? =
  26. 26.1/6 − 1/8 =
  27. 27.1/2 − 3/10 =
  28. 28.A tank is 6/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  29. 29.A tank is 1/2 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  30. 30.Riya has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  31. 31.3/7 − 1/3 =
  32. 32.Riya has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  33. 33.8/9 − 2/3 =
  34. 34.1/3 − 1/10 =
  35. 35.Arjun has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.8/9 − 1/2 =
  37. 37.Rohan has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  38. 38.A tank is 5/6 full of water. Then water filling 7/9 of the tank is used. What fraction of the tank is full now? =
  39. 39.2/3 − 1/5 =
  40. 40.A tank is 8/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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