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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 533 · 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. 1.7/10 − 1/4 =
  2. 2.A tank is 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  3. 3.A bottle has 7/8 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  4. 4.9/10 − 5/6 =
  5. 5.4/5 − 1/4 =
  6. 6.2/3 − 4/7 =
  7. 7.2/3 − 2/7 =
  8. 8.Ishaan has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  9. 9.7/10 − 1/6 =
  10. 10.A tank is 1/2 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  11. 11.A bottle has 2/3 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  12. 12.3/4 − 1/5 =
  13. 13.4/7 − 1/2 =
  14. 14.9/10 − 3/5 =
  15. 15.5/7 − 2/3 =
  16. 16.1/2 − 1/7 =
  17. 17.1/5 − 1/6 =
  18. 18.1/3 − 1/9 =
  19. 19.A bottle has 8/9 litre of juice. Rohan drinks 5/6 litre. How much juice is left (in litres)? =
  20. 20.5/9 − 1/2 =
  21. 21.A bottle has 4/9 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  22. 22.7/9 − 2/3 =
  23. 23.8/9 − 1/3 =
  24. 24.Vihaan has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  25. 25.A tank is 2/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  26. 26.2/3 − 1/7 =
  27. 27.5/7 − 1/2 =
  28. 28.A tank is 3/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  29. 29.Meera has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  30. 30.A tank is 5/6 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  31. 31.9/10 − 1/3 =
  32. 32.5/8 − 1/3 =
  33. 33.5/9 − 1/3 =
  34. 34.7/10 − 3/5 =
  35. 35.4/5 − 7/10 =
  36. 36.7/8 − 1/2 =
  37. 37.5/6 − 1/3 =
  38. 38.9/10 − 1/4 =
  39. 39.A tank is 6/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  40. 40.2/3 − 2/9 =

Answer key

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

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