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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 324 · 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. 1.1/2 − 1/5 =
  2. 2.A bottle has 4/5 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  3. 3.Arjun has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  4. 4.3/4 − 2/5 =
  5. 5.A tank is 7/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  6. 6.1/3 − 2/7 =
  7. 7.1/4 − 1/8 =
  8. 8.2/3 − 1/8 =
  9. 9.8/9 − 2/3 =
  10. 10.A bottle has 6/7 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  11. 11.2/3 − 2/5 =
  12. 12.A tank is 8/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 2/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  14. 14.2/3 − 3/7 =
  15. 15.7/8 − 1/2 =
  16. 16.1/3 − 1/4 =
  17. 17.1/3 − 3/10 =
  18. 18.A bottle has 3/5 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  19. 19.Anaya has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  20. 20.1/6 − 1/9 =
  21. 21.7/10 − 1/2 =
  22. 22.Vihaan has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  23. 23.1/2 − 1/8 =
  24. 24.9/10 − 1/2 =
  25. 25.A bottle has 8/9 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  26. 26.6/7 − 1/3 =
  27. 27.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? =
  28. 28.Diya has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 7/9 litre of juice. Aarav drinks 2/3 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 2/3 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  31. 31.2/3 − 4/7 =
  32. 32.3/5 − 1/2 =
  33. 33.5/6 − 5/9 =
  34. 34.1/2 − 2/9 =
  35. 35.Riya has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  36. 36.8/9 − 1/3 =
  37. 37.A bottle has 2/3 litre of juice. Meera drinks 1/7 litre. How much juice is left (in litres)? =
  38. 38.3/4 − 3/7 =
  39. 39.5/7 − 2/3 =
  40. 40.5/9 − 1/3 =

Answer key

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

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