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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 557 · 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 1/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  2. 2.9/10 − 1/2 =
  3. 3.A tank is 8/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.2/5 − 3/10 =
  5. 5.7/9 − 1/2 =
  6. 6.A bottle has 2/3 litre of juice. Tara drinks 3/5 litre. How much juice is left (in litres)? =
  7. 7.7/8 − 1/3 =
  8. 8.5/6 − 3/5 =
  9. 9.1/6 − 1/10 =
  10. 10.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? =
  11. 11.Kabir has a ribbon 3/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  12. 12.Aarav has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  13. 13.1/2 − 2/7 =
  14. 14.Kabir has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  15. 15.2/3 − 4/9 =
  16. 16.A tank is 1/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  17. 17.Kabir has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  18. 18.Riya has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 4/9 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  20. 20.Sara has a ribbon 5/6 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  21. 21.5/9 − 1/6 =
  22. 22.A tank is 2/3 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.5/6 − 2/3 =
  24. 24.Sara has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  25. 25.5/6 − 1/5 =
  26. 26.4/5 − 1/10 =
  27. 27.4/5 − 3/4 =
  28. 28.1/3 − 1/10 =
  29. 29.A bottle has 1/3 litre of juice. Kabir drinks 1/7 litre. How much juice is left (in litres)? =
  30. 30.Aarav has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  31. 31.1/4 − 1/6 =
  32. 32.4/9 − 1/3 =
  33. 33.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 3/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  35. 35.A tank is 2/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  36. 36.5/8 − 1/3 =
  37. 37.A tank is 9/10 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  38. 38.1/2 − 1/7 =
  39. 39.Kabir has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  40. 40.Ishaan has a ribbon 5/6 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =

Answer key

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

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