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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 900 · 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. 1.3/4 − 4/7 =
  2. 2.1/3 − 3/10 =
  3. 3.Anaya has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 3/4 litre of juice. Arjun drinks 3/7 litre. How much juice is left (in litres)? =
  5. 5.Aarav has a ribbon 4/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  6. 6.A tank is 2/3 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  7. 7.Anaya has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  8. 8.3/5 − 1/6 =
  9. 9.6/7 − 1/3 =
  10. 10.2/3 − 1/5 =
  11. 11.5/6 − 1/9 =
  12. 12.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  13. 13.4/5 − 7/10 =
  14. 14.Meera has a ribbon 4/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  15. 15.A tank is 1/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  16. 16.5/6 − 7/9 =
  17. 17.A tank is 7/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  18. 18.5/6 − 4/9 =
  19. 19.A bottle has 3/4 litre of juice. Riya drinks 5/8 litre. How much juice is left (in litres)? =
  20. 20.A tank is 5/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  21. 21.1/2 − 2/5 =
  22. 22.A tank is 3/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.A bottle has 3/4 litre of juice. Sara drinks 1/5 litre. How much juice is left (in litres)? =
  24. 24.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  25. 25.3/4 − 1/7 =
  26. 26.4/5 − 1/3 =
  27. 27.Tara has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  28. 28.A bottle has 2/3 litre of juice. Rohan drinks 4/7 litre. How much juice is left (in litres)? =
  29. 29.Aarav has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 7/10 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  31. 31.2/5 − 1/3 =
  32. 32.A bottle has 1/6 litre of juice. Vihaan drinks 1/10 litre. How much juice is left (in litres)? =
  33. 33.1/3 − 1/5 =
  34. 34.A bottle has 3/4 litre of juice. Tara drinks 5/8 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 7/8 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  36. 36.2/3 − 3/7 =
  37. 37.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  38. 38.Tara has a ribbon 5/6 m long and cuts off 4/5 m. How long is the ribbon now (in m)? =
  39. 39.Riya has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  40. 40.3/8 − 1/4 =

Answer key

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

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