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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 543 · 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. 1.6/7 − 1/4 =
  2. 2.Vihaan has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  3. 3.3/4 − 5/7 =
  4. 4.3/7 − 1/4 =
  5. 5.3/8 − 1/3 =
  6. 6.7/10 − 2/3 =
  7. 7.A tank is 8/9 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  8. 8.Ishaan has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  9. 9.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  10. 10.3/5 − 3/10 =
  11. 11.Kabir has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  12. 12.A tank is 7/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  13. 13.A bottle has 3/4 litre of juice. Kabir drinks 5/8 litre. How much juice is left (in litres)? =
  14. 14.2/3 − 1/7 =
  15. 15.6/7 − 1/2 =
  16. 16.9/10 − 5/6 =
  17. 17.9/10 − 3/5 =
  18. 18.Vihaan has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 2/3 litre of juice. Aarav drinks 3/7 litre. How much juice is left (in litres)? =
  20. 20.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  21. 21.Ishaan has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  22. 22.A bottle has 3/5 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  23. 23.1/3 − 1/5 =
  24. 24.A bottle has 4/5 litre of juice. Anaya drinks 7/10 litre. How much juice is left (in litres)? =
  25. 25.3/4 − 2/7 =
  26. 26.A bottle has 2/3 litre of juice. Rohan drinks 2/9 litre. How much juice is left (in litres)? =
  27. 27.5/9 − 1/3 =
  28. 28.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  29. 29.1/4 − 1/8 =
  30. 30.A bottle has 2/9 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 1/2 litre of juice. Vihaan drinks 1/8 litre. How much juice is left (in litres)? =
  32. 32.8/9 − 1/2 =
  33. 33.Diya has a ribbon 4/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  34. 34.5/6 − 1/9 =
  35. 35.1/3 − 2/7 =
  36. 36.A bottle has 2/3 litre of juice. Kabir drinks 4/7 litre. How much juice is left (in litres)? =
  37. 37.Rohan has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 7/8 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 2/3 litre of juice. Meera drinks 1/7 litre. How much juice is left (in litres)? =
  40. 40.3/4 − 1/10 =

Answer key

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

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