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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 597 · 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 − 2/5 =
  2. 2.1/3 − 2/7 =
  3. 3.4/5 − 7/10 =
  4. 4.2/3 − 3/5 =
  5. 5.2/3 − 1/8 =
  6. 6.2/3 − 2/5 =
  7. 7.1/3 − 1/10 =
  8. 8.7/9 − 1/2 =
  9. 9.Anaya has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  10. 10.2/3 − 3/7 =
  11. 11.1/6 − 1/9 =
  12. 12.Rohan has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  13. 13.2/7 − 1/4 =
  14. 14.8/9 − 2/3 =
  15. 15.A bottle has 7/9 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  16. 16.7/8 − 2/3 =
  17. 17.1/3 − 1/7 =
  18. 18.4/5 − 1/10 =
  19. 19.A bottle has 1/2 litre of juice. Meera drinks 3/7 litre. How much juice is left (in litres)? =
  20. 20.A tank is 9/10 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  21. 21.A bottle has 5/6 litre of juice. Rohan drinks 4/5 litre. How much juice is left (in litres)? =
  22. 22.Ishaan has a ribbon 5/6 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  23. 23.1/2 − 3/7 =
  24. 24.2/3 − 4/7 =
  25. 25.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  26. 26.A tank is 2/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  27. 27.2/3 − 5/8 =
  28. 28.1/4 − 1/10 =
  29. 29.3/8 − 1/4 =
  30. 30.A tank is 3/4 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  31. 31.6/7 − 1/3 =
  32. 32.1/2 − 1/7 =
  33. 33.4/5 − 3/4 =
  34. 34.A bottle has 3/4 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  35. 35.1/6 − 1/8 =
  36. 36.A bottle has 1/5 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  37. 37.A tank is 1/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  38. 38.3/4 − 1/7 =
  39. 39.A bottle has 9/10 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 7/9 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =

Answer key

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

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