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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 209 · 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.Aarav has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  2. 2.7/10 − 2/5 =
  3. 3.4/7 − 1/3 =
  4. 4.Ishaan has a ribbon 2/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  5. 5.A tank is 7/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  6. 6.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  7. 7.4/5 − 7/10 =
  8. 8.A bottle has 3/10 litre of juice. Ishaan drinks 1/4 litre. How much juice is left (in litres)? =
  9. 9.Sara has a ribbon 4/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  10. 10.1/6 − 1/9 =
  11. 11.9/10 − 3/4 =
  12. 12.A tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  13. 13.Vihaan has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  14. 14.5/6 − 5/8 =
  15. 15.4/9 − 1/3 =
  16. 16.A bottle has 7/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  17. 17.2/3 − 3/10 =
  18. 18.Riya has a ribbon 2/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  19. 19.A tank is 2/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  20. 20.1/2 − 1/10 =
  21. 21.5/7 − 2/3 =
  22. 22.1/6 − 1/8 =
  23. 23.7/10 − 1/2 =
  24. 24.A bottle has 1/3 litre of juice. Anaya drinks 2/7 litre. How much juice is left (in litres)? =
  25. 25.1/3 − 2/7 =
  26. 26.A bottle has 5/6 litre of juice. Vihaan drinks 4/5 litre. How much juice is left (in litres)? =
  27. 27.2/9 − 1/6 =
  28. 28.Kabir has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 2/3 litre of juice. Rohan drinks 4/7 litre. How much juice is left (in litres)? =
  30. 30.A tank is 9/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  31. 31.3/4 − 1/5 =
  32. 32.A bottle has 1/3 litre of juice. Arjun drinks 2/7 litre. How much juice is left (in litres)? =
  33. 33.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 5/6 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  35. 35.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  36. 36.5/8 − 1/4 =
  37. 37.A tank is 1/2 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  38. 38.9/10 − 4/5 =
  39. 39.Rohan has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  40. 40.3/4 − 5/8 =

Answer key

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

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