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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 633 · 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. 1.1/5 − 1/6 =
  2. 2.1/2 − 2/7 =
  3. 3.3/5 − 1/4 =
  4. 4.5/8 − 1/2 =
  5. 5.A bottle has 1/2 litre of juice. Ishaan drinks 4/9 litre. How much juice is left (in litres)? =
  6. 6.Ishaan has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  7. 7.Diya has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  8. 8.5/6 − 7/9 =
  9. 9.6/7 − 3/4 =
  10. 10.Anaya has a ribbon 7/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  11. 11.Anaya has a ribbon 2/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  12. 12.5/6 − 1/9 =
  13. 13.A tank is 8/9 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 1/5 litre of juice. Riya drinks 1/10 litre. How much juice is left (in litres)? =
  15. 15.A tank is 3/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  16. 16.A bottle has 5/7 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  17. 17.A bottle has 5/6 litre of juice. Anaya drinks 1/9 litre. How much juice is left (in litres)? =
  18. 18.A bottle has 3/4 litre of juice. Tara drinks 3/10 litre. How much juice is left (in litres)? =
  19. 19.A bottle has 1/2 litre of juice. Arjun drinks 3/10 litre. How much juice is left (in litres)? =
  20. 20.7/8 − 1/3 =
  21. 21.2/3 − 2/7 =
  22. 22.A bottle has 5/6 litre of juice. Diya drinks 5/8 litre. How much juice is left (in litres)? =
  23. 23.Arjun has a ribbon 2/3 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  24. 24.Sara has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  25. 25.1/3 − 2/7 =
  26. 26.A bottle has 4/5 litre of juice. Arjun drinks 3/4 litre. How much juice is left (in litres)? =
  27. 27.A tank is 3/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  28. 28.3/4 − 1/5 =
  29. 29.Meera has a ribbon 1/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  30. 30.2/5 − 1/4 =
  31. 31.3/10 − 1/4 =
  32. 32.A tank is 2/3 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  33. 33.A bottle has 5/6 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  34. 34.A bottle has 1/3 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  35. 35.5/6 − 2/3 =
  36. 36.9/10 − 1/2 =
  37. 37.2/5 − 1/3 =
  38. 38.7/8 − 1/4 =
  39. 39.2/3 − 4/7 =
  40. 40.5/6 − 2/5 =

Answer key

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

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