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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 154 · 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. 1.5/6 − 1/5 =
  2. 2.A tank is 4/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  3. 3.7/8 − 3/4 =
  4. 4.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? =
  5. 5.Aarav has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  6. 6.2/5 − 1/10 =
  7. 7.A bottle has 1/3 litre of juice. Aarav drinks 1/9 litre. How much juice is left (in litres)? =
  8. 8.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? =
  9. 9.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? =
  10. 10.1/3 − 1/7 =
  11. 11.4/5 − 1/6 =
  12. 12.Aarav has a ribbon 1/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  13. 13.Riya has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  14. 14.3/4 − 1/8 =
  15. 15.2/9 − 1/6 =
  16. 16.A bottle has 4/7 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  17. 17.A bottle has 6/7 litre of juice. Vihaan drinks 1/2 litre. How much juice is left (in litres)? =
  18. 18.A tank is 9/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  19. 19.A bottle has 3/4 litre of juice. Riya drinks 3/8 litre. How much juice is left (in litres)? =
  20. 20.4/5 − 7/10 =
  21. 21.3/10 − 1/6 =
  22. 22.A bottle has 1/2 litre of juice. Sara drinks 4/9 litre. How much juice is left (in litres)? =
  23. 23.3/4 − 1/5 =
  24. 24.5/9 − 1/6 =
  25. 25.9/10 − 2/5 =
  26. 26.7/8 − 2/3 =
  27. 27.6/7 − 3/4 =
  28. 28.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  29. 29.A tank is 1/2 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  30. 30.A bottle has 2/3 litre of juice. Aarav drinks 4/9 litre. How much juice is left (in litres)? =
  31. 31.1/3 − 2/9 =
  32. 32.7/10 − 2/5 =
  33. 33.A bottle has 5/6 litre of juice. Rohan drinks 4/5 litre. How much juice is left (in litres)? =
  34. 34.A bottle has 7/10 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  35. 35.5/7 − 1/4 =
  36. 36.1/2 − 2/5 =
  37. 37.A bottle has 5/6 litre of juice. Sara drinks 3/8 litre. How much juice is left (in litres)? =
  38. 38.Aarav has a ribbon 1/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  39. 39.7/9 − 1/3 =
  40. 40.Tara has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =

Answer key

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

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