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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 491 · 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. 1.2/3 − 1/9 =
  2. 2.Rohan has a ribbon 3/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  3. 3.A tank is 1/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  4. 4.8/9 − 1/2 =
  5. 5.A tank is 1/2 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  6. 6.2/9 − 1/6 =
  7. 7.6/7 − 1/3 =
  8. 8.A bottle has 4/5 litre of juice. Aarav drinks 7/10 litre. How much juice is left (in litres)? =
  9. 9.5/6 − 3/5 =
  10. 10.1/2 − 1/7 =
  11. 11.A bottle has 1/4 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  12. 12.A tank is 2/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  13. 13.3/4 − 3/7 =
  14. 14.A bottle has 7/8 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  15. 15.Riya has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 1/6 litre of juice. Tara drinks 1/10 litre. How much juice is left (in litres)? =
  17. 17.2/3 − 5/9 =
  18. 18.A bottle has 1/2 litre of juice. Kabir drinks 1/9 litre. How much juice is left (in litres)? =
  19. 19.1/6 − 1/9 =
  20. 20.A bottle has 3/4 litre of juice. Rohan drinks 3/5 litre. How much juice is left (in litres)? =
  21. 21.2/7 − 1/4 =
  22. 22.1/4 − 1/5 =
  23. 23.7/10 − 1/3 =
  24. 24.1/5 − 1/10 =
  25. 25.3/5 − 3/10 =
  26. 26.2/5 − 3/10 =
  27. 27.A tank is 5/6 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  28. 28.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? =
  29. 29.A bottle has 3/4 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  30. 30.Riya has a ribbon 3/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  31. 31.5/6 − 4/5 =
  32. 32.1/2 − 2/9 =
  33. 33.A tank is 7/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 9/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  35. 35.Meera has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  36. 36.A bottle has 3/5 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 3/4 litre of juice. Aarav drinks 2/3 litre. How much juice is left (in litres)? =
  38. 38.Diya has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  39. 39.Arjun has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 1/3 litre of juice. Rohan drinks 1/7 litre. How much juice is left (in litres)? =

Answer key

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

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