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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 982 · 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.Diya has a ribbon 3/4 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  2. 2.A bottle has 2/3 litre of juice. Sara drinks 2/7 litre. How much juice is left (in litres)? =
  3. 3.5/6 − 4/5 =
  4. 4.4/5 − 1/6 =
  5. 5.A bottle has 5/9 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  6. 6.1/2 − 1/8 =
  7. 7.5/9 − 1/3 =
  8. 8.3/4 − 1/5 =
  9. 9.3/4 − 1/2 =
  10. 10.A bottle has 2/3 litre of juice. Rohan drinks 1/8 litre. How much juice is left (in litres)? =
  11. 11.1/2 − 4/9 =
  12. 12.Arjun has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  13. 13.7/10 − 1/3 =
  14. 14.A bottle has 3/4 litre of juice. Riya drinks 5/7 litre. How much juice is left (in litres)? =
  15. 15.9/10 − 3/4 =
  16. 16.5/8 − 1/3 =
  17. 17.A tank is 1/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  18. 18.5/6 − 5/9 =
  19. 19.A tank is 2/3 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  20. 20.6/7 − 1/3 =
  21. 21.3/4 − 4/7 =
  22. 22.Aarav has a ribbon 3/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  23. 23.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  24. 24.A bottle has 3/4 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  25. 25.2/3 − 3/7 =
  26. 26.9/10 − 1/2 =
  27. 27.9/10 − 3/5 =
  28. 28.A bottle has 7/9 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  29. 29.Riya has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  30. 30.A tank is 5/6 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  31. 31.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  32. 32.Diya has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  33. 33.Sara has a ribbon 2/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  34. 34.4/7 − 1/2 =
  35. 35.Ishaan has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  36. 36.A tank is 3/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  37. 37.2/5 − 1/6 =
  38. 38.Vihaan has a ribbon 3/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  39. 39.2/3 − 1/4 =
  40. 40.3/8 − 1/3 =

Answer key

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

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