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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 606 · 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.Diya has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  2. 2.3/4 − 1/3 =
  3. 3.3/4 − 7/10 =
  4. 4.1/4 − 1/7 =
  5. 5.3/5 − 1/2 =
  6. 6.1/2 − 2/5 =
  7. 7.Rohan has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  8. 8.5/6 − 1/4 =
  9. 9.A tank is 2/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  10. 10.7/8 − 1/3 =
  11. 11.7/9 − 1/6 =
  12. 12.1/2 − 2/7 =
  13. 13.Sara has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  14. 14.3/8 − 1/4 =
  15. 15.A bottle has 3/4 litre of juice. Tara drinks 5/8 litre. How much juice is left (in litres)? =
  16. 16.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  17. 17.4/9 − 1/3 =
  18. 18.5/8 − 1/4 =
  19. 19.Arjun has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  20. 20.7/8 − 1/2 =
  21. 21.5/6 − 2/5 =
  22. 22.4/5 − 1/4 =
  23. 23.2/3 − 1/8 =
  24. 24.A tank is 1/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  25. 25.A bottle has 3/4 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  26. 26.5/6 − 1/8 =
  27. 27.9/10 − 1/6 =
  28. 28.1/2 − 4/9 =
  29. 29.9/10 − 4/5 =
  30. 30.7/9 − 1/2 =
  31. 31.A bottle has 1/2 litre of juice. Anaya drinks 2/9 litre. How much juice is left (in litres)? =
  32. 32.8/9 − 1/3 =
  33. 33.A bottle has 1/2 litre of juice. Tara drinks 3/7 litre. How much juice is left (in litres)? =
  34. 34.3/7 − 1/4 =
  35. 35.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? =
  36. 36.A bottle has 8/9 litre of juice. Vihaan drinks 2/3 litre. How much juice is left (in litres)? =
  37. 37.Ishaan has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  38. 38.3/4 − 3/5 =
  39. 39.A bottle has 1/6 litre of juice. Aarav drinks 1/9 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 5/7 litre of juice. Tara drinks 2/3 litre. How much juice is left (in litres)? =

Answer key

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

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