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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 658 · 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. 1.1/2 − 1/8 =
  2. 2.A bottle has 7/8 litre of juice. Anaya drinks 2/3 litre. How much juice is left (in litres)? =
  3. 3.1/2 − 1/7 =
  4. 4.1/2 − 1/9 =
  5. 5.1/3 − 1/7 =
  6. 6.A bottle has 3/7 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  7. 7.A tank is 7/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  8. 8.A tank is 2/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 5/6 litre of juice. Arjun drinks 3/8 litre. How much juice is left (in litres)? =
  10. 10.Meera has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  11. 11.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  12. 12.A bottle has 1/2 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  13. 13.5/9 − 1/3 =
  14. 14.Riya has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  15. 15.2/3 − 1/7 =
  16. 16.4/5 − 1/6 =
  17. 17.9/10 − 2/3 =
  18. 18.1/2 − 3/8 =
  19. 19.6/7 − 3/4 =
  20. 20.8/9 − 2/3 =
  21. 21.Aarav has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  22. 22.Tara has a ribbon 9/10 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  23. 23.A bottle has 5/6 litre of juice. Sara drinks 2/9 litre. How much juice is left (in litres)? =
  24. 24.Vihaan has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  25. 25.Ishaan has a ribbon 9/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  26. 26.1/2 − 2/9 =
  27. 27.5/6 − 1/5 =
  28. 28.A bottle has 1/6 litre of juice. Sara drinks 1/8 litre. How much juice is left (in litres)? =
  29. 29.Riya has a ribbon 1/2 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  30. 30.3/4 − 3/5 =
  31. 31.3/5 − 1/2 =
  32. 32.4/5 − 1/3 =
  33. 33.A tank is 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  34. 34.5/6 − 1/9 =
  35. 35.A tank is 3/10 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 9/10 litre of juice. Arjun drinks 2/3 litre. How much juice is left (in litres)? =
  37. 37.4/5 − 3/10 =
  38. 38.3/5 − 1/3 =
  39. 39.4/5 − 3/4 =
  40. 40.3/4 − 1/6 =

Answer key

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

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