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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 368 · 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 − 1/6 =
  2. 2.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? =
  3. 3.Meera has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  4. 4.1/3 − 1/9 =
  5. 5.5/6 − 5/9 =
  6. 6.Ishaan has a ribbon 3/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  7. 7.3/4 − 5/8 =
  8. 8.1/6 − 1/8 =
  9. 9.2/3 − 1/5 =
  10. 10.1/2 − 2/5 =
  11. 11.A tank is 7/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  12. 12.Aarav has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  13. 13.7/10 − 1/2 =
  14. 14.A tank is 5/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  15. 15.Kabir has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  16. 16.1/2 − 1/5 =
  17. 17.A tank is 1/2 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  18. 18.Riya has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 6/7 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  20. 20.4/5 − 3/4 =
  21. 21.Riya has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  22. 22.5/7 − 1/2 =
  23. 23.9/10 − 1/3 =
  24. 24.1/5 − 1/6 =
  25. 25.5/9 − 1/3 =
  26. 26.A bottle has 1/2 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  27. 27.1/4 − 1/8 =
  28. 28.2/3 − 1/9 =
  29. 29.8/9 − 1/2 =
  30. 30.A bottle has 1/2 litre of juice. Tara drinks 1/8 litre. How much juice is left (in litres)? =
  31. 31.2/3 − 4/7 =
  32. 32.Arjun has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  33. 33.7/10 − 3/5 =
  34. 34.Rohan has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  35. 35.5/8 − 1/4 =
  36. 36.7/8 − 1/6 =
  37. 37.1/2 − 2/9 =
  38. 38.5/6 − 4/9 =
  39. 39.Anaya has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  40. 40.2/5 − 1/6 =

Answer key

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

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