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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 270 · 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. 1.2/3 − 1/9 =
  2. 2.6/7 − 1/3 =
  3. 3.8/9 − 1/2 =
  4. 4.3/10 − 1/5 =
  5. 5.2/5 − 1/10 =
  6. 6.Kabir has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  7. 7.A bottle has 9/10 litre of juice. Ishaan drinks 3/5 litre. How much juice is left (in litres)? =
  8. 8.6/7 − 3/4 =
  9. 9.2/3 − 1/6 =
  10. 10.A tank is 1/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  11. 11.Ishaan has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 6/7 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  13. 13.3/4 − 3/8 =
  14. 14.6/7 − 1/2 =
  15. 15.5/6 − 4/9 =
  16. 16.A bottle has 1/2 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  17. 17.1/3 − 1/6 =
  18. 18.9/10 − 3/4 =
  19. 19.Vihaan has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  20. 20.2/3 − 1/10 =
  21. 21.A tank is 5/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  22. 22.A bottle has 2/3 litre of juice. Ishaan drinks 4/7 litre. How much juice is left (in litres)? =
  23. 23.1/3 − 1/9 =
  24. 24.A tank is 2/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  25. 25.Kabir has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  26. 26.3/5 − 1/6 =
  27. 27.Meera has a ribbon 5/6 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  28. 28.Aarav has a ribbon 3/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 2/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  30. 30.Kabir has a ribbon 7/8 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  31. 31.A tank is 3/4 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  32. 32.3/7 − 1/3 =
  33. 33.A bottle has 1/2 litre of juice. Arjun drinks 4/9 litre. How much juice is left (in litres)? =
  34. 34.7/8 − 1/4 =
  35. 35.8/9 − 1/3 =
  36. 36.5/8 − 1/4 =
  37. 37.A bottle has 2/9 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 2/3 litre of juice. Meera drinks 1/9 litre. How much juice is left (in litres)? =
  39. 39.Meera has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  40. 40.Arjun has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =

Answer key

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

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