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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 256 · 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. 1.2/5 − 3/10 =
  2. 2.5/6 − 2/9 =
  3. 3.3/4 − 3/5 =
  4. 4.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? =
  5. 5.Diya has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  6. 6.6/7 − 2/3 =
  7. 7.3/5 − 1/3 =
  8. 8.A bottle has 5/8 litre of juice. Ishaan drinks 1/4 litre. How much juice is left (in litres)? =
  9. 9.5/9 − 1/6 =
  10. 10.A tank is 3/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  11. 11.Rohan has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  12. 12.3/4 − 1/5 =
  13. 13.A bottle has 3/4 litre of juice. Diya drinks 1/7 litre. How much juice is left (in litres)? =
  14. 14.3/4 − 2/5 =
  15. 15.Riya has a ribbon 2/3 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  16. 16.7/10 − 2/5 =
  17. 17.5/6 − 1/2 =
  18. 18.A bottle has 1/2 litre of juice. Aarav drinks 1/7 litre. How much juice is left (in litres)? =
  19. 19.4/5 − 3/10 =
  20. 20.Ishaan has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  21. 21.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? =
  22. 22.Sara has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  23. 23.3/4 − 5/8 =
  24. 24.A bottle has 7/9 litre of juice. Vihaan drinks 1/2 litre. How much juice is left (in litres)? =
  25. 25.Riya has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  26. 26.7/10 − 2/3 =
  27. 27.3/8 − 1/6 =
  28. 28.A bottle has 7/10 litre of juice. Diya drinks 2/5 litre. How much juice is left (in litres)? =
  29. 29.Tara has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  30. 30.3/8 − 1/3 =
  31. 31.A bottle has 3/4 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  32. 32.3/7 − 1/3 =
  33. 33.1/4 − 1/7 =
  34. 34.1/3 − 2/7 =
  35. 35.A bottle has 5/7 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  36. 36.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? =
  37. 37.A tank is 5/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  38. 38.9/10 − 3/5 =
  39. 39.3/4 − 2/3 =
  40. 40.4/5 − 1/6 =

Answer key

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

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