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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 216 · 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.Kabir has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  2. 2.5/9 − 1/3 =
  3. 3.2/5 − 3/10 =
  4. 4.A tank is 1/3 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  5. 5.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? =
  6. 6.Diya has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  7. 7.8/9 − 1/3 =
  8. 8.5/8 − 1/4 =
  9. 9.9/10 − 4/5 =
  10. 10.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? =
  11. 11.A bottle has 1/2 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 3/4 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  13. 13.3/5 − 3/10 =
  14. 14.9/10 − 5/6 =
  15. 15.A tank is 3/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  16. 16.3/10 − 1/5 =
  17. 17.Vihaan has a ribbon 3/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  18. 18.Tara has a ribbon 1/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 2/5 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  20. 20.Rohan has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  21. 21.Riya has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  22. 22.3/4 − 1/10 =
  23. 23.A bottle has 3/10 litre of juice. Kabir drinks 1/5 litre. How much juice is left (in litres)? =
  24. 24.1/2 − 1/4 =
  25. 25.2/5 − 1/6 =
  26. 26.Kabir has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  27. 27.7/8 − 1/2 =
  28. 28.A tank is 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  29. 29.4/5 − 3/10 =
  30. 30.A bottle has 5/8 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 3/4 litre of juice. Sara drinks 2/7 litre. How much juice is left (in litres)? =
  32. 32.A tank is 5/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  33. 33.7/8 − 1/4 =
  34. 34.1/4 − 1/7 =
  35. 35.6/7 − 1/3 =
  36. 36.A tank is 3/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  37. 37.2/3 − 1/9 =
  38. 38.1/2 − 3/8 =
  39. 39.2/3 − 2/7 =
  40. 40.Anaya has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =

Answer key

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

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