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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 300 · 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. 1.2/9 − 1/6 =
  2. 2.9/10 − 1/3 =
  3. 3.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  4. 4.A bottle has 2/3 litre of juice. Sara drinks 5/9 litre. How much juice is left (in litres)? =
  5. 5.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  6. 6.9/10 − 3/5 =
  7. 7.Tara has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  8. 8.8/9 − 2/3 =
  9. 9.1/6 − 1/9 =
  10. 10.A bottle has 4/5 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  11. 11.5/9 − 1/2 =
  12. 12.A tank is 3/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  13. 13.3/4 − 3/10 =
  14. 14.7/10 − 1/3 =
  15. 15.A bottle has 7/9 litre of juice. Sara drinks 2/3 litre. How much juice is left (in litres)? =
  16. 16.Vihaan has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  17. 17.8/9 − 1/2 =
  18. 18.A bottle has 5/9 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  19. 19.Ishaan has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  20. 20.A bottle has 2/5 litre of juice. Rohan drinks 3/10 litre. How much juice is left (in litres)? =
  21. 21.1/4 − 1/8 =
  22. 22.8/9 − 1/6 =
  23. 23.7/8 − 1/2 =
  24. 24.Tara has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  25. 25.5/6 − 1/5 =
  26. 26.Diya has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  27. 27.4/7 − 1/4 =
  28. 28.4/7 − 1/3 =
  29. 29.A bottle has 2/3 litre of juice. Kabir drinks 5/9 litre. How much juice is left (in litres)? =
  30. 30.3/5 − 3/10 =
  31. 31.3/5 − 1/2 =
  32. 32.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? =
  33. 33.Diya has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  34. 34.1/2 − 1/7 =
  35. 35.4/7 − 1/2 =
  36. 36.A bottle has 1/2 litre of juice. Kabir drinks 3/8 litre. How much juice is left (in litres)? =
  37. 37.3/4 − 3/5 =
  38. 38.5/8 − 1/6 =
  39. 39.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  40. 40.2/3 − 2/9 =

Answer key

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

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