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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 734 · 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. 1.6/7 − 2/3 =
  2. 2.5/6 − 4/9 =
  3. 3.Aarav has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 5/6 litre of juice. Vihaan drinks 4/5 litre. How much juice is left (in litres)? =
  5. 5.3/5 − 1/2 =
  6. 6.1/3 − 1/8 =
  7. 7.A bottle has 4/5 litre of juice. Diya drinks 3/4 litre. How much juice is left (in litres)? =
  8. 8.A tank is 8/9 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.3/4 − 4/7 =
  10. 10.3/5 − 1/4 =
  11. 11.9/10 − 1/5 =
  12. 12.A bottle has 5/8 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  13. 13.A bottle has 4/7 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  14. 14.A tank is 7/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  15. 15.9/10 − 1/6 =
  16. 16.4/5 − 1/3 =
  17. 17.A bottle has 5/6 litre of juice. Tara drinks 3/10 litre. How much juice is left (in litres)? =
  18. 18.Sara has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 4/5 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  20. 20.1/3 − 1/5 =
  21. 21.4/7 − 1/4 =
  22. 22.6/7 − 1/4 =
  23. 23.2/3 − 1/7 =
  24. 24.Anaya has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  25. 25.A tank is 4/5 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  26. 26.2/3 − 1/5 =
  27. 27.A bottle has 1/4 litre of juice. Arjun drinks 1/8 litre. How much juice is left (in litres)? =
  28. 28.7/10 − 1/3 =
  29. 29.2/5 − 3/10 =
  30. 30.7/8 − 3/4 =
  31. 31.A bottle has 9/10 litre of juice. Diya drinks 4/5 litre. How much juice is left (in litres)? =
  32. 32.2/3 − 5/9 =
  33. 33.A tank is 1/2 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  34. 34.A bottle has 3/5 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  35. 35.1/4 − 1/7 =
  36. 36.A bottle has 7/8 litre of juice. Aarav drinks 2/3 litre. How much juice is left (in litres)? =
  37. 37.Diya has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 5/6 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  39. 39.2/3 − 2/9 =
  40. 40.1/2 − 1/9 =

Answer key

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

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