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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 940 · 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. 1.4/7 − 1/3 =
  2. 2.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? =
  3. 3.3/4 − 2/5 =
  4. 4.A bottle has 2/3 litre of juice. Kabir drinks 4/9 litre. How much juice is left (in litres)? =
  5. 5.1/2 − 1/5 =
  6. 6.5/9 − 1/6 =
  7. 7.7/8 − 1/2 =
  8. 8.A bottle has 5/7 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  9. 9.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  10. 10.A bottle has 1/2 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 3/5 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 1/2 litre of juice. Tara drinks 2/5 litre. How much juice is left (in litres)? =
  13. 13.6/7 − 3/4 =
  14. 14.2/3 − 1/9 =
  15. 15.1/2 − 2/9 =
  16. 16.3/4 − 3/7 =
  17. 17.3/8 − 1/6 =
  18. 18.3/4 − 5/7 =
  19. 19.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  20. 20.A bottle has 5/7 litre of juice. Diya drinks 2/3 litre. How much juice is left (in litres)? =
  21. 21.4/7 − 1/4 =
  22. 22.2/3 − 3/10 =
  23. 23.7/10 − 1/3 =
  24. 24.4/9 − 1/3 =
  25. 25.3/7 − 1/3 =
  26. 26.1/2 − 1/8 =
  27. 27.2/3 − 2/9 =
  28. 28.A bottle has 1/2 litre of juice. Ishaan drinks 1/8 litre. How much juice is left (in litres)? =
  29. 29.A tank is 4/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  30. 30.A bottle has 3/7 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  31. 31.Vihaan has a ribbon 3/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  32. 32.A bottle has 1/4 litre of juice. Diya drinks 1/8 litre. How much juice is left (in litres)? =
  33. 33.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  34. 34.Meera has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  35. 35.A tank is 4/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  36. 36.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  37. 37.Vihaan has a ribbon 5/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  38. 38.Ishaan has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  39. 39.A bottle has 1/3 litre of juice. Vihaan drinks 1/7 litre. How much juice is left (in litres)? =
  40. 40.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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