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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 972 · 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. 1.5/6 − 1/8 =
  2. 2.A tank is 2/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  3. 3.5/9 − 1/2 =
  4. 4.8/9 − 5/6 =
  5. 5.A bottle has 2/5 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  6. 6.7/9 − 1/6 =
  7. 7.7/8 − 3/4 =
  8. 8.A bottle has 3/4 litre of juice. Meera drinks 4/7 litre. How much juice is left (in litres)? =
  9. 9.2/3 − 3/8 =
  10. 10.7/9 − 2/3 =
  11. 11.3/4 − 3/10 =
  12. 12.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  13. 13.4/5 − 7/10 =
  14. 14.A bottle has 3/4 litre of juice. Vihaan drinks 1/7 litre. How much juice is left (in litres)? =
  15. 15.1/3 − 1/7 =
  16. 16.5/6 − 5/8 =
  17. 17.A bottle has 3/7 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  18. 18.7/9 − 1/3 =
  19. 19.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  20. 20.5/8 − 1/4 =
  21. 21.Ishaan has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  22. 22.9/10 − 1/3 =
  23. 23.3/4 − 7/10 =
  24. 24.1/2 − 1/4 =
  25. 25.Kabir has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  26. 26.A bottle has 2/3 litre of juice. Vihaan drinks 3/5 litre. How much juice is left (in litres)? =
  27. 27.3/8 − 1/4 =
  28. 28.2/3 − 2/5 =
  29. 29.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? =
  30. 30.2/3 − 4/9 =
  31. 31.A bottle has 7/9 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  32. 32.8/9 − 1/6 =
  33. 33.5/7 − 1/4 =
  34. 34.9/10 − 1/6 =
  35. 35.A bottle has 5/6 litre of juice. Diya drinks 3/10 litre. How much juice is left (in litres)? =
  36. 36.5/6 − 7/9 =
  37. 37.9/10 − 4/5 =
  38. 38.2/3 − 1/10 =
  39. 39.A bottle has 3/7 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  40. 40.4/7 − 1/4 =

Answer key

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

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