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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 96 · 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. 1.4/7 − 1/2 =
  2. 2.3/10 − 1/4 =
  3. 3.A bottle has 2/3 litre of juice. Aarav drinks 1/5 litre. How much juice is left (in litres)? =
  4. 4.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? =
  5. 5.3/5 − 3/10 =
  6. 6.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? =
  7. 7.Tara has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  8. 8.A bottle has 5/7 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  9. 9.A tank is 1/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  10. 10.A bottle has 1/2 litre of juice. Aarav drinks 4/9 litre. How much juice is left (in litres)? =
  11. 11.4/5 − 1/6 =
  12. 12.9/10 − 4/5 =
  13. 13.4/9 − 1/3 =
  14. 14.1/6 − 1/8 =
  15. 15.1/2 − 3/7 =
  16. 16.3/5 − 1/6 =
  17. 17.A tank is 3/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  18. 18.2/3 − 3/5 =
  19. 19.A tank is 4/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  20. 20.8/9 − 1/2 =
  21. 21.Diya has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  22. 22.A bottle has 4/5 litre of juice. Kabir drinks 7/10 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 2/3 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  24. 24.7/9 − 1/2 =
  25. 25.Diya has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  26. 26.Vihaan has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  27. 27.A tank is 3/4 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  28. 28.Meera has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  29. 29.8/9 − 5/6 =
  30. 30.Kabir has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  31. 31.1/4 − 1/6 =
  32. 32.9/10 − 1/5 =
  33. 33.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? =
  34. 34.2/3 − 3/8 =
  35. 35.4/5 − 7/10 =
  36. 36.3/8 − 1/4 =
  37. 37.2/5 − 3/10 =
  38. 38.A bottle has 6/7 litre of juice. Vihaan drinks 2/3 litre. How much juice is left (in litres)? =
  39. 39.Diya has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  40. 40.Vihaan has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =

Answer key

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

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