← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 213 · 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.Sara has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  2. 2.A bottle has 3/7 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  3. 3.7/10 − 1/6 =
  4. 4.6/7 − 2/3 =
  5. 5.A tank is 6/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  6. 6.A bottle has 7/8 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  7. 7.A tank is 5/6 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 7/9 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 5/7 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  10. 10.A tank is 6/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  11. 11.A bottle has 3/4 litre of juice. Ishaan drinks 3/8 litre. How much juice is left (in litres)? =
  12. 12.7/8 − 1/3 =
  13. 13.A bottle has 7/8 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  14. 14.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? =
  15. 15.7/8 − 2/3 =
  16. 16.4/5 − 3/10 =
  17. 17.Sara has a ribbon 9/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  18. 18.3/5 − 3/10 =
  19. 19.7/8 − 3/4 =
  20. 20.1/4 − 1/6 =
  21. 21.Vihaan has a ribbon 5/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  22. 22.A bottle has 3/4 litre of juice. Kabir drinks 5/7 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 3/4 litre of juice. Ishaan drinks 5/8 litre. How much juice is left (in litres)? =
  24. 24.3/4 − 2/3 =
  25. 25.Arjun has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  26. 26.A bottle has 2/3 litre of juice. Anaya drinks 2/7 litre. How much juice is left (in litres)? =
  27. 27.Arjun has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  28. 28.A bottle has 1/2 litre of juice. Meera drinks 3/10 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 5/9 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  30. 30.4/5 − 1/3 =
  31. 31.2/9 − 1/6 =
  32. 32.A bottle has 5/8 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  33. 33.1/2 − 1/5 =
  34. 34.Meera has a ribbon 1/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  35. 35.A tank is 1/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  36. 36.1/4 − 1/5 =
  37. 37.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  38. 38.5/7 − 2/3 =
  39. 39.4/5 − 7/10 =
  40. 40.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? =

Answer key

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

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