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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 151 · 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. 1.7/10 − 1/3 =
  2. 2.3/8 − 1/4 =
  3. 3.3/4 − 5/7 =
  4. 4.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  5. 5.A tank is 7/10 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  6. 6.A tank is 1/2 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  7. 7.Anaya has a ribbon 3/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  8. 8.A bottle has 5/6 litre of juice. Riya drinks 7/9 litre. How much juice is left (in litres)? =
  9. 9.A tank is 5/6 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  10. 10.3/10 − 1/4 =
  11. 11.A bottle has 1/5 litre of juice. Arjun drinks 1/10 litre. How much juice is left (in litres)? =
  12. 12.5/7 − 1/2 =
  13. 13.A bottle has 1/2 litre of juice. Diya drinks 3/7 litre. How much juice is left (in litres)? =
  14. 14.Aarav has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  15. 15.A bottle has 3/5 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 3/4 litre of juice. Aarav drinks 3/5 litre. How much juice is left (in litres)? =
  17. 17.9/10 − 3/5 =
  18. 18.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? =
  19. 19.A bottle has 6/7 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  20. 20.Anaya has a ribbon 2/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  21. 21.2/3 − 5/9 =
  22. 22.5/6 − 1/5 =
  23. 23.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  24. 24.A bottle has 3/4 litre of juice. Ishaan drinks 3/5 litre. How much juice is left (in litres)? =
  25. 25.A tank is 1/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  26. 26.A bottle has 1/3 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  27. 27.3/5 − 1/3 =
  28. 28.Riya has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  29. 29.A tank is 3/4 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  30. 30.2/5 − 1/3 =
  31. 31.7/9 − 1/2 =
  32. 32.Anaya has a ribbon 3/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  33. 33.1/3 − 1/7 =
  34. 34.A bottle has 5/6 litre of juice. Vihaan drinks 2/5 litre. How much juice is left (in litres)? =
  35. 35.4/5 − 1/6 =
  36. 36.6/7 − 1/3 =
  37. 37.7/10 − 3/5 =
  38. 38.1/3 − 1/4 =
  39. 39.3/8 − 1/3 =
  40. 40.5/6 − 3/5 =

Answer key

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

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