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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 480 · 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 2/3 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  2. 2.A bottle has 5/8 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  3. 3.6/7 − 1/2 =
  4. 4.A bottle has 5/9 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 4/5 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  6. 6.3/8 − 1/3 =
  7. 7.A bottle has 3/7 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 2/3 litre of juice. Tara drinks 1/9 litre. How much juice is left (in litres)? =
  9. 9.Diya has a ribbon 7/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  10. 10.2/3 − 5/9 =
  11. 11.A tank is 5/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  12. 12.A bottle has 2/3 litre of juice. Kabir drinks 1/9 litre. How much juice is left (in litres)? =
  13. 13.3/4 − 1/10 =
  14. 14.A bottle has 6/7 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  15. 15.Vihaan has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 2/5 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  17. 17.7/8 − 2/3 =
  18. 18.7/10 − 3/5 =
  19. 19.Diya has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  20. 20.2/3 − 4/7 =
  21. 21.4/5 − 1/6 =
  22. 22.4/5 − 1/4 =
  23. 23.Vihaan has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 2/3 litre of juice. Ishaan drinks 3/8 litre. How much juice is left (in litres)? =
  25. 25.9/10 − 3/5 =
  26. 26.A bottle has 2/3 litre of juice. Diya drinks 4/9 litre. How much juice is left (in litres)? =
  27. 27.Tara has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  28. 28.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? =
  29. 29.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  30. 30.Tara has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  31. 31.7/10 − 1/5 =
  32. 32.1/2 − 1/4 =
  33. 33.1/4 − 1/7 =
  34. 34.Rohan has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  35. 35.A bottle has 9/10 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  36. 36.5/7 − 1/3 =
  37. 37.Aarav has a ribbon 3/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  38. 38.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  39. 39.4/7 − 1/2 =
  40. 40.A bottle has 3/4 litre of juice. Arjun drinks 4/7 litre. How much juice is left (in litres)? =

Answer key

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

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