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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 984 · 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. 1.7/10 − 2/3 =
  2. 2.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  3. 3.A tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  4. 4.A tank is 2/3 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  5. 5.5/6 − 7/10 =
  6. 6.Diya has a ribbon 1/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  7. 7.6/7 − 1/2 =
  8. 8.4/5 − 1/2 =
  9. 9.5/8 − 1/2 =
  10. 10.3/8 − 1/3 =
  11. 11.A bottle has 7/10 litre of juice. Aarav drinks 3/5 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 9/10 litre of juice. Anaya drinks 5/6 litre. How much juice is left (in litres)? =
  13. 13.6/7 − 3/4 =
  14. 14.A bottle has 1/2 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  15. 15.5/7 − 1/2 =
  16. 16.1/2 − 2/9 =
  17. 17.6/7 − 1/4 =
  18. 18.1/2 − 2/7 =
  19. 19.5/6 − 3/8 =
  20. 20.A tank is 5/6 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  21. 21.2/5 − 3/10 =
  22. 22.1/3 − 1/8 =
  23. 23.A bottle has 7/9 litre of juice. Diya drinks 2/3 litre. How much juice is left (in litres)? =
  24. 24.A tank is 7/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.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? =
  26. 26.3/4 − 1/2 =
  27. 27.5/7 − 1/4 =
  28. 28.4/5 − 1/4 =
  29. 29.A tank is 1/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  30. 30.4/9 − 1/6 =
  31. 31.1/2 − 1/9 =
  32. 32.A bottle has 7/9 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  33. 33.9/10 − 3/4 =
  34. 34.1/2 − 4/9 =
  35. 35.A bottle has 1/3 litre of juice. Meera drinks 1/7 litre. How much juice is left (in litres)? =
  36. 36.7/9 − 1/3 =
  37. 37.5/6 − 3/5 =
  38. 38.Anaya has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  39. 39.7/10 − 1/2 =
  40. 40.9/10 − 1/4 =

Answer key

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

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