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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 189 · 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. 1.1/3 − 2/7 =
  2. 2.5/9 − 1/3 =
  3. 3.A bottle has 5/6 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  4. 4.3/5 − 1/4 =
  5. 5.Vihaan has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  6. 6.Tara has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  7. 7.7/10 − 1/4 =
  8. 8.7/9 − 2/3 =
  9. 9.Riya has a ribbon 2/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  10. 10.A tank is 7/8 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  11. 11.Tara has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  12. 12.4/5 − 1/4 =
  13. 13.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? =
  14. 14.A bottle has 5/6 litre of juice. Meera drinks 4/5 litre. How much juice is left (in litres)? =
  15. 15.Tara has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  16. 16.Tara has a ribbon 2/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  17. 17.7/10 − 1/3 =
  18. 18.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  19. 19.A tank is 1/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  20. 20.7/9 − 1/2 =
  21. 21.Tara has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  22. 22.2/3 − 2/7 =
  23. 23.3/10 − 1/4 =
  24. 24.5/6 − 3/4 =
  25. 25.Tara has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  26. 26.A bottle has 2/3 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  27. 27.Anaya has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  28. 28.Anaya has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  29. 29.3/10 − 1/5 =
  30. 30.Kabir has a ribbon 2/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  31. 31.4/5 − 7/10 =
  32. 32.A bottle has 5/6 litre of juice. Ishaan drinks 7/9 litre. How much juice is left (in litres)? =
  33. 33.1/2 − 4/9 =
  34. 34.A bottle has 1/2 litre of juice. Meera drinks 1/9 litre. How much juice is left (in litres)? =
  35. 35.Aarav has a ribbon 8/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  36. 36.A bottle has 3/4 litre of juice. Aarav drinks 3/10 litre. How much juice is left (in litres)? =
  37. 37.A tank is 3/4 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  38. 38.A bottle has 2/3 litre of juice. Diya drinks 5/9 litre. How much juice is left (in litres)? =
  39. 39.Sara has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  40. 40.A tank is 1/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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