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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 234 · 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.A tank is 8/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  2. 2.2/3 − 4/9 =
  3. 3.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? =
  4. 4.Sara has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  5. 5.3/4 − 5/8 =
  6. 6.5/8 − 1/6 =
  7. 7.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? =
  8. 8.Arjun has a ribbon 5/6 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  9. 9.A tank is 7/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  10. 10.4/9 − 1/6 =
  11. 11.2/3 − 1/7 =
  12. 12.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  13. 13.4/7 − 1/3 =
  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. 15.4/5 − 3/10 =
  16. 16.2/5 − 1/4 =
  17. 17.5/8 − 1/4 =
  18. 18.2/7 − 1/4 =
  19. 19.8/9 − 5/6 =
  20. 20.A bottle has 4/5 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  21. 21.A bottle has 3/4 litre of juice. Kabir drinks 1/7 litre. How much juice is left (in litres)? =
  22. 22.A bottle has 5/6 litre of juice. Aarav drinks 3/5 litre. How much juice is left (in litres)? =
  23. 23.5/6 − 5/9 =
  24. 24.1/3 − 1/6 =
  25. 25.7/8 − 5/6 =
  26. 26.3/4 − 1/8 =
  27. 27.1/6 − 1/10 =
  28. 28.5/7 − 1/2 =
  29. 29.A bottle has 5/6 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 1/2 litre of juice. Kabir drinks 2/9 litre. How much juice is left (in litres)? =
  31. 31.Kabir has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  32. 32.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  33. 33.5/7 − 2/3 =
  34. 34.A tank is 3/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  35. 35.A bottle has 2/5 litre of juice. Tara drinks 3/10 litre. How much juice is left (in litres)? =
  36. 36.7/8 − 1/2 =
  37. 37.A bottle has 5/7 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 9/10 litre of juice. Arjun drinks 4/5 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 1/3 litre of juice. Riya drinks 1/9 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 9/10 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =

Answer key

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

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