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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 870 · 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. 1.4/5 − 1/4 =
  2. 2.A tank is 5/6 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  3. 3.A bottle has 4/5 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  4. 4.3/7 − 1/3 =
  5. 5.4/7 − 1/2 =
  6. 6.Vihaan has a ribbon 6/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  7. 7.2/9 − 1/6 =
  8. 8.A bottle has 5/6 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  9. 9.5/7 − 1/3 =
  10. 10.7/9 − 2/3 =
  11. 11.Anaya has a ribbon 2/3 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  12. 12.Kabir has a ribbon 1/2 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  13. 13.A bottle has 3/4 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  14. 14.5/8 − 1/2 =
  15. 15.A tank is 5/6 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  16. 16.5/6 − 3/10 =
  17. 17.A bottle has 1/6 litre of juice. Riya drinks 1/9 litre. How much juice is left (in litres)? =
  18. 18.Aarav has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  19. 19.3/4 − 7/10 =
  20. 20.2/3 − 3/7 =
  21. 21.A bottle has 5/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  22. 22.Arjun has a ribbon 1/2 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  23. 23.3/4 − 4/7 =
  24. 24.A bottle has 5/6 litre of juice. Ishaan drinks 7/10 litre. How much juice is left (in litres)? =
  25. 25.1/2 − 4/9 =
  26. 26.4/5 − 7/10 =
  27. 27.5/6 − 7/9 =
  28. 28.A bottle has 2/3 litre of juice. Tara drinks 2/9 litre. How much juice is left (in litres)? =
  29. 29.5/6 − 2/5 =
  30. 30.A bottle has 4/7 litre of juice. Vihaan drinks 1/2 litre. How much juice is left (in litres)? =
  31. 31.7/8 − 1/4 =
  32. 32.A tank is 5/6 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  33. 33.A bottle has 5/6 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  34. 34.Aarav has a ribbon 2/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  35. 35.2/5 − 1/10 =
  36. 36.A bottle has 5/6 litre of juice. Sara drinks 7/9 litre. How much juice is left (in litres)? =
  37. 37.2/3 − 2/9 =
  38. 38.A bottle has 3/4 litre of juice. Rohan drinks 1/7 litre. How much juice is left (in litres)? =
  39. 39.1/2 − 1/6 =
  40. 40.2/7 − 1/4 =

Answer key

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

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