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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 59 · 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.Diya has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  2. 2.5/6 − 7/9 =
  3. 3.A tank is 5/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  4. 4.A bottle has 5/6 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 2/3 litre of juice. Anaya drinks 3/7 litre. How much juice is left (in litres)? =
  6. 6.1/3 − 2/9 =
  7. 7.1/4 − 1/8 =
  8. 8.A tank is 4/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.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? =
  10. 10.3/5 − 1/10 =
  11. 11.3/4 − 1/5 =
  12. 12.8/9 − 2/3 =
  13. 13.Arjun has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 1/5 litre of juice. Meera drinks 1/10 litre. How much juice is left (in litres)? =
  15. 15.1/3 − 1/9 =
  16. 16.3/4 − 2/3 =
  17. 17.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  18. 18.3/5 − 1/4 =
  19. 19.4/9 − 1/3 =
  20. 20.Diya has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  21. 21.4/7 − 1/4 =
  22. 22.Rohan has a ribbon 2/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  23. 23.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  24. 24.5/8 − 1/2 =
  25. 25.Ishaan has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  26. 26.3/4 − 4/7 =
  27. 27.Sara has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  28. 28.Diya has a ribbon 3/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  29. 29.4/5 − 3/10 =
  30. 30.1/3 − 1/7 =
  31. 31.Ishaan has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  32. 32.Riya has a ribbon 3/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  33. 33.Diya has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  34. 34.5/8 − 1/3 =
  35. 35.Rohan has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  36. 36.7/8 − 1/3 =
  37. 37.9/10 − 1/6 =
  38. 38.Kabir has a ribbon 5/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  39. 39.A bottle has 4/5 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  40. 40.1/2 − 2/7 =

Answer key

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

Free fractions lessons, practice and worksheets at talentjr.in/fractions-for-kids