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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 761 · 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 − 1/10 =
  2. 2.3/5 − 1/2 =
  3. 3.A bottle has 6/7 litre of juice. Sara drinks 2/3 litre. How much juice is left (in litres)? =
  4. 4.7/10 − 2/5 =
  5. 5.3/4 − 2/7 =
  6. 6.A bottle has 8/9 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  7. 7.Aarav has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  8. 8.A tank is 9/10 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 − 7/10 =
  10. 10.Arjun has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  11. 11.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  12. 12.Anaya has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  13. 13.5/7 − 2/3 =
  14. 14.3/7 − 1/4 =
  15. 15.A tank is 4/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  16. 16.3/10 − 1/5 =
  17. 17.A tank is 1/2 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  18. 18.Tara has a ribbon 3/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  19. 19.8/9 − 1/3 =
  20. 20.Riya has a ribbon 4/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  21. 21.3/5 − 1/4 =
  22. 22.A bottle has 6/7 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  23. 23.1/2 − 2/5 =
  24. 24.7/9 − 1/2 =
  25. 25.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  26. 26.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? =
  27. 27.A tank is 3/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  28. 28.1/6 − 1/8 =
  29. 29.Sara has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  30. 30.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? =
  31. 31.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  32. 32.8/9 − 2/3 =
  33. 33.Anaya has a ribbon 1/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  34. 34.3/4 − 3/10 =
  35. 35.2/5 − 3/10 =
  36. 36.A bottle has 3/4 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  37. 37.8/9 − 1/2 =
  38. 38.2/9 − 1/6 =
  39. 39.A bottle has 4/5 litre of juice. Anaya drinks 3/4 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 3/8 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =

Answer key

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

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