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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 748 · 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. 1.1/3 − 1/9 =
  2. 2.A tank is 3/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  3. 3.1/3 − 1/4 =
  4. 4.Diya has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  5. 5.7/10 − 1/6 =
  6. 6.1/2 − 3/10 =
  7. 7.Arjun has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  8. 8.3/7 − 1/3 =
  9. 9.Diya has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  10. 10.2/3 − 4/7 =
  11. 11.3/4 − 2/7 =
  12. 12.A bottle has 5/6 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  13. 13.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  14. 14.2/5 − 1/3 =
  15. 15.A tank is 7/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  16. 16.7/8 − 5/6 =
  17. 17.A bottle has 3/5 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  18. 18.A bottle has 9/10 litre of juice. Diya drinks 3/5 litre. How much juice is left (in litres)? =
  19. 19.7/8 − 1/4 =
  20. 20.2/3 − 2/9 =
  21. 21.A bottle has 1/2 litre of juice. Arjun drinks 1/7 litre. How much juice is left (in litres)? =
  22. 22.5/6 − 2/9 =
  23. 23.3/7 − 1/4 =
  24. 24.A bottle has 3/4 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  25. 25.A tank is 3/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  26. 26.7/9 − 1/2 =
  27. 27.3/4 − 3/7 =
  28. 28.Diya has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 3/7 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 5/6 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  31. 31.Kabir has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  32. 32.3/5 − 1/2 =
  33. 33.A tank is 1/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  34. 34.A bottle has 1/2 litre of juice. Meera drinks 1/5 litre. How much juice is left (in litres)? =
  35. 35.9/10 − 5/6 =
  36. 36.A bottle has 5/6 litre of juice. Ishaan drinks 1/4 litre. How much juice is left (in litres)? =
  37. 37.Rohan has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  38. 38.Meera has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  39. 39.3/4 − 1/6 =
  40. 40.1/5 − 1/6 =

Answer key

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

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