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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 752 · 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. 1.3/10 − 1/6 =
  2. 2.5/6 − 5/9 =
  3. 3.7/8 − 2/3 =
  4. 4.4/5 − 1/3 =
  5. 5.Riya has a ribbon 3/4 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  6. 6.1/2 − 1/9 =
  7. 7.A bottle has 5/6 litre of juice. Rohan drinks 4/9 litre. How much juice is left (in litres)? =
  8. 8.A tank is 2/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  9. 9.Ishaan has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  10. 10.A bottle has 4/5 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  11. 11.A tank is 3/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  12. 12.4/9 − 1/3 =
  13. 13.2/3 − 1/9 =
  14. 14.3/7 − 1/3 =
  15. 15.Vihaan has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  16. 16.1/3 − 1/8 =
  17. 17.Sara has a ribbon 7/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  18. 18.7/8 − 1/4 =
  19. 19.A bottle has 5/6 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  20. 20.3/4 − 7/10 =
  21. 21.Sara has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  22. 22.Anaya has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  23. 23.3/4 − 1/2 =
  24. 24.A bottle has 1/4 litre of juice. Aarav drinks 1/5 litre. How much juice is left (in litres)? =
  25. 25.2/3 − 1/7 =
  26. 26.A bottle has 2/3 litre of juice. Kabir drinks 1/5 litre. How much juice is left (in litres)? =
  27. 27.8/9 − 2/3 =
  28. 28.A bottle has 5/6 litre of juice. Riya drinks 3/8 litre. How much juice is left (in litres)? =
  29. 29.1/4 − 1/10 =
  30. 30.2/3 − 2/7 =
  31. 31.A tank is 5/6 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  32. 32.1/4 − 1/8 =
  33. 33.A tank is 6/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  34. 34.A bottle has 5/6 litre of juice. Ishaan drinks 3/5 litre. How much juice is left (in litres)? =
  35. 35.5/6 − 5/8 =
  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. 37.4/7 − 1/2 =
  38. 38.A bottle has 5/7 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  39. 39.Diya has a ribbon 1/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 9/10 litre of juice. Tara drinks 4/5 litre. How much juice is left (in litres)? =

Answer key

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

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