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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 36 · 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. 1.3/8 − 1/6 =
  2. 2.A bottle has 3/4 litre of juice. Rohan drinks 4/7 litre. How much juice is left (in litres)? =
  3. 3.Riya has a ribbon 5/6 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 9/10 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  5. 5.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? =
  6. 6.5/6 − 1/3 =
  7. 7.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  8. 8.Anaya has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  9. 9.A bottle has 9/10 litre of juice. Riya drinks 3/5 litre. How much juice is left (in litres)? =
  10. 10.Vihaan has a ribbon 9/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  11. 11.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? =
  12. 12.3/4 − 1/10 =
  13. 13.A bottle has 6/7 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  14. 14.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  15. 15.4/5 − 1/2 =
  16. 16.8/9 − 1/6 =
  17. 17.Diya has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  18. 18.5/9 − 1/3 =
  19. 19.5/7 − 1/4 =
  20. 20.3/4 − 5/7 =
  21. 21.1/2 − 3/8 =
  22. 22.1/2 − 1/7 =
  23. 23.7/9 − 1/2 =
  24. 24.1/6 − 1/9 =
  25. 25.1/3 − 1/8 =
  26. 26.A tank is 7/8 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.1/4 − 1/8 =
  28. 28.A tank is 5/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  29. 29.A tank is 7/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  30. 30.3/5 − 1/4 =
  31. 31.2/3 − 1/7 =
  32. 32.1/6 − 1/10 =
  33. 33.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  34. 34.A bottle has 1/2 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 6/7 litre of juice. Riya drinks 3/4 litre. How much juice is left (in litres)? =
  36. 36.A tank is 4/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  37. 37.A tank is 1/2 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  38. 38.3/5 − 1/10 =
  39. 39.7/8 − 1/6 =
  40. 40.4/5 − 1/6 =

Answer key

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

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