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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 63 · 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 − 1/6 =
  2. 2.5/6 − 1/8 =
  3. 3.A tank is 1/2 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  4. 4.Ishaan has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  5. 5.1/3 − 2/9 =
  6. 6.1/2 − 1/10 =
  7. 7.4/9 − 1/3 =
  8. 8.5/6 − 1/4 =
  9. 9.8/9 − 1/3 =
  10. 10.A bottle has 1/2 litre of juice. Anaya drinks 2/9 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 2/3 litre of juice. Riya drinks 3/8 litre. How much juice is left (in litres)? =
  12. 12.1/2 − 3/7 =
  13. 13.Diya has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  14. 14.A tank is 2/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  15. 15.Sara has a ribbon 5/6 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  16. 16.3/5 − 1/2 =
  17. 17.2/9 − 1/6 =
  18. 18.5/9 − 1/6 =
  19. 19.5/6 − 1/9 =
  20. 20.A bottle has 3/4 litre of juice. Arjun drinks 3/7 litre. How much juice is left (in litres)? =
  21. 21.Kabir has a ribbon 3/4 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  22. 22.3/4 − 1/8 =
  23. 23.6/7 − 1/3 =
  24. 24.3/8 − 1/6 =
  25. 25.A bottle has 3/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  26. 26.1/2 − 1/8 =
  27. 27.Anaya has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  28. 28.4/7 − 1/3 =
  29. 29.A bottle has 1/4 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  30. 30.5/6 − 3/8 =
  31. 31.Kabir has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  32. 32.5/9 − 1/2 =
  33. 33.5/6 − 3/4 =
  34. 34.A bottle has 4/5 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  35. 35.5/6 − 7/9 =
  36. 36.5/7 − 2/3 =
  37. 37.A tank is 8/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  38. 38.3/5 − 1/6 =
  39. 39.7/10 − 1/2 =
  40. 40.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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