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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 134 · 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. 1.1/3 − 2/7 =
  2. 2.A tank is 2/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  3. 3.A bottle has 3/4 litre of juice. Meera drinks 2/7 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 1/2 litre of juice. Anaya drinks 3/8 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 2/3 litre of juice. Anaya drinks 3/8 litre. How much juice is left (in litres)? =
  6. 6.6/7 − 3/4 =
  7. 7.A bottle has 1/2 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  8. 8.1/3 − 1/9 =
  9. 9.A bottle has 5/6 litre of juice. Riya drinks 1/9 litre. How much juice is left (in litres)? =
  10. 10.3/4 − 7/10 =
  11. 11.3/4 − 3/10 =
  12. 12.A tank is 3/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 2/3 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  14. 14.2/3 − 2/9 =
  15. 15.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? =
  16. 16.2/3 − 2/5 =
  17. 17.2/3 − 1/5 =
  18. 18.Ishaan has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  19. 19.A tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  20. 20.A tank is 1/2 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  21. 21.Anaya has a ribbon 7/8 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  22. 22.Rohan has a ribbon 4/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  23. 23.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? =
  24. 24.3/4 − 5/7 =
  25. 25.5/6 − 7/9 =
  26. 26.A tank is 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  27. 27.5/6 − 4/5 =
  28. 28.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  29. 29.9/10 − 1/4 =
  30. 30.2/9 − 1/6 =
  31. 31.Aarav has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  32. 32.7/8 − 3/4 =
  33. 33.3/5 − 3/10 =
  34. 34.5/7 − 2/3 =
  35. 35.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  36. 36.1/6 − 1/10 =
  37. 37.9/10 − 1/5 =
  38. 38.1/3 − 1/4 =
  39. 39.Riya has a ribbon 6/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  40. 40.5/8 − 1/6 =

Answer key

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

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