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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 40 · 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 − 2/7 =
  2. 2.Kabir has a ribbon 5/6 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  3. 3.6/7 − 1/3 =
  4. 4.3/4 − 1/5 =
  5. 5.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? =
  6. 6.Arjun has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  7. 7.5/6 − 5/8 =
  8. 8.A tank is 3/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  9. 9.Aarav has a ribbon 2/3 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  10. 10.Aarav has a ribbon 9/10 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  11. 11.1/4 − 1/5 =
  12. 12.3/8 − 1/6 =
  13. 13.3/5 − 3/10 =
  14. 14.A bottle has 3/4 litre of juice. Sara drinks 5/7 litre. How much juice is left (in litres)? =
  15. 15.A tank is 1/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  16. 16.Meera has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  17. 17.3/4 − 5/8 =
  18. 18.7/10 − 3/5 =
  19. 19.3/7 − 1/4 =
  20. 20.Ishaan has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  21. 21.Ishaan has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  22. 22.Vihaan has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  23. 23.1/2 − 1/4 =
  24. 24.A bottle has 7/9 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 2/3 litre of juice. Kabir drinks 4/9 litre. How much juice is left (in litres)? =
  26. 26.2/3 − 1/9 =
  27. 27.5/7 − 1/4 =
  28. 28.A bottle has 3/5 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  29. 29.Meera has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  30. 30.3/4 − 3/7 =
  31. 31.A tank is 5/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  32. 32.A bottle has 7/9 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  33. 33.1/6 − 1/10 =
  34. 34.Diya has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  35. 35.3/5 − 1/6 =
  36. 36.1/3 − 1/7 =
  37. 37.A bottle has 2/3 litre of juice. Meera drinks 3/8 litre. How much juice is left (in litres)? =
  38. 38.7/8 − 1/4 =
  39. 39.Diya has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  40. 40.Riya has a ribbon 3/4 m long and cuts off 5/7 m. How long is the ribbon now (in m)? =

Answer key

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

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