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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 976 · 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 − 1/6 =
  2. 2.9/10 − 3/4 =
  3. 3.9/10 − 4/5 =
  4. 4.A bottle has 2/3 litre of juice. Ishaan drinks 1/9 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 7/8 litre of juice. Vihaan drinks 5/6 litre. How much juice is left (in litres)? =
  6. 6.A tank is 1/2 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  7. 7.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  8. 8.Kabir has a ribbon 4/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  9. 9.5/8 − 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. 11.5/6 − 7/10 =
  12. 12.7/8 − 1/4 =
  13. 13.1/3 − 2/7 =
  14. 14.Aarav has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  15. 15.1/3 − 1/7 =
  16. 16.8/9 − 1/2 =
  17. 17.1/3 − 1/8 =
  18. 18.2/3 − 1/9 =
  19. 19.5/6 − 2/5 =
  20. 20.3/7 − 1/3 =
  21. 21.A tank is 9/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  22. 22.1/2 − 3/8 =
  23. 23.1/4 − 1/8 =
  24. 24.8/9 − 5/6 =
  25. 25.2/3 − 4/9 =
  26. 26.5/8 − 1/4 =
  27. 27.A tank is 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 5/6 litre of juice. Aarav drinks 1/5 litre. How much juice is left (in litres)? =
  29. 29.3/4 − 1/7 =
  30. 30.Vihaan has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  31. 31.5/6 − 7/9 =
  32. 32.A bottle has 2/3 litre of juice. Meera drinks 4/7 litre. How much juice is left (in litres)? =
  33. 33.Arjun has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  34. 34.7/9 − 1/6 =
  35. 35.A tank is 7/8 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  36. 36.A bottle has 3/4 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  37. 37.A tank is 5/6 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  38. 38.5/9 − 1/2 =
  39. 39.A bottle has 7/10 litre of juice. Tara drinks 2/3 litre. How much juice is left (in litres)? =
  40. 40.Rohan has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =

Answer key

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

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