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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 426 · 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 − 1/5 =
  2. 2.5/6 − 3/5 =
  3. 3.1/4 − 1/10 =
  4. 4.3/10 − 1/6 =
  5. 5.A bottle has 1/4 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  6. 6.3/7 − 1/3 =
  7. 7.A tank is 2/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 8/9 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  9. 9.2/3 − 3/5 =
  10. 10.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  11. 11.Anaya has a ribbon 2/3 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  12. 12.2/5 − 1/3 =
  13. 13.5/7 − 1/3 =
  14. 14.Aarav has a ribbon 1/2 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  15. 15.2/3 − 1/7 =
  16. 16.5/6 − 1/2 =
  17. 17.A bottle has 4/9 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  18. 18.3/8 − 1/3 =
  19. 19.Meera has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  20. 20.1/2 − 1/9 =
  21. 21.A bottle has 2/3 litre of juice. Aarav drinks 5/9 litre. How much juice is left (in litres)? =
  22. 22.Diya has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  23. 23.A bottle has 5/7 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  24. 24.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  25. 25.Aarav has a ribbon 3/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  26. 26.A bottle has 7/8 litre of juice. Arjun drinks 3/4 litre. How much juice is left (in litres)? =
  27. 27.A tank is 2/3 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  28. 28.Ishaan has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  29. 29.2/3 − 4/7 =
  30. 30.1/6 − 1/9 =
  31. 31.7/9 − 1/6 =
  32. 32.1/3 − 2/9 =
  33. 33.3/4 − 3/7 =
  34. 34.1/3 − 1/8 =
  35. 35.9/10 − 4/5 =
  36. 36.5/6 − 1/9 =
  37. 37.1/4 − 1/8 =
  38. 38.1/2 − 2/5 =
  39. 39.2/3 − 5/9 =
  40. 40.5/6 − 1/3 =

Answer key

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

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