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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 321 · 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.Riya has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  2. 2.A tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  3. 3.A bottle has 7/10 litre of juice. Diya drinks 2/3 litre. How much juice is left (in litres)? =
  4. 4.5/6 − 1/9 =
  5. 5.5/6 − 2/3 =
  6. 6.7/10 − 3/5 =
  7. 7.A bottle has 7/10 litre of juice. Ishaan drinks 3/5 litre. How much juice is left (in litres)? =
  8. 8.Aarav has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  9. 9.3/4 − 3/8 =
  10. 10.A bottle has 6/7 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  11. 11.Kabir has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  12. 12.Riya has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  13. 13.1/3 − 1/10 =
  14. 14.2/3 − 2/5 =
  15. 15.A bottle has 2/3 litre of juice. Ishaan drinks 2/9 litre. How much juice is left (in litres)? =
  16. 16.1/6 − 1/9 =
  17. 17.1/4 − 1/8 =
  18. 18.3/4 − 1/10 =
  19. 19.A bottle has 2/3 litre of juice. Diya drinks 3/10 litre. How much juice is left (in litres)? =
  20. 20.2/3 − 5/9 =
  21. 21.A bottle has 2/5 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  22. 22.1/2 − 3/10 =
  23. 23.Ishaan has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 8/9 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  25. 25.1/2 − 1/4 =
  26. 26.5/6 − 4/5 =
  27. 27.2/3 − 3/8 =
  28. 28.Anaya has a ribbon 3/4 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  29. 29.2/3 − 2/7 =
  30. 30.3/5 − 1/3 =
  31. 31.2/3 − 4/7 =
  32. 32.6/7 − 3/4 =
  33. 33.7/9 − 1/3 =
  34. 34.Kabir has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  35. 35.A bottle has 1/4 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  36. 36.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  37. 37.A bottle has 7/10 litre of juice. Kabir drinks 3/5 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 6/7 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  39. 39.Vihaan has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  40. 40.Aarav has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =

Answer key

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

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