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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 711 · 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 − 3/8 =
  2. 2.Meera has a ribbon 3/4 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  3. 3.Diya has a ribbon 9/10 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 6/7 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  5. 5.Meera has a ribbon 2/3 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  6. 6.5/6 − 7/9 =
  7. 7.A bottle has 3/4 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  8. 8.Tara has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  9. 9.1/2 − 1/9 =
  10. 10.A tank is 3/4 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  11. 11.Riya has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  12. 12.7/10 − 1/2 =
  13. 13.2/3 − 3/8 =
  14. 14.A tank is 5/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  15. 15.3/4 − 4/7 =
  16. 16.5/7 − 1/2 =
  17. 17.Rohan has a ribbon 9/10 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  18. 18.Riya has a ribbon 1/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  19. 19.Tara has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  20. 20.9/10 − 3/5 =
  21. 21.A bottle has 5/7 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  22. 22.1/2 − 3/7 =
  23. 23.A bottle has 8/9 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  24. 24.2/3 − 1/7 =
  25. 25.Diya has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  26. 26.A tank is 2/3 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  27. 27.Vihaan has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  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 tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  30. 30.A tank is 1/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  31. 31.9/10 − 1/6 =
  32. 32.1/5 − 1/10 =
  33. 33.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? =
  34. 34.7/9 − 2/3 =
  35. 35.3/4 − 1/7 =
  36. 36.Meera has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  37. 37.1/2 − 1/8 =
  38. 38.2/3 − 1/9 =
  39. 39.6/7 − 2/3 =
  40. 40.3/4 − 1/5 =

Answer key

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

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