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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 869 · 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. 1.4/9 − 1/6 =
  2. 2.A bottle has 2/3 litre of juice. Tara drinks 5/9 litre. How much juice is left (in litres)? =
  3. 3.A tank is 5/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  4. 4.1/6 − 1/9 =
  5. 5.9/10 − 3/5 =
  6. 6.3/4 − 1/5 =
  7. 7.A bottle has 3/4 litre of juice. Kabir drinks 3/8 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 2/3 litre of juice. Meera drinks 3/10 litre. How much juice is left (in litres)? =
  9. 9.Diya has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  10. 10.2/5 − 3/10 =
  11. 11.1/4 − 1/7 =
  12. 12.Aarav has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  13. 13.A bottle has 1/3 litre of juice. Meera drinks 2/9 litre. How much juice is left (in litres)? =
  14. 14.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  15. 15.4/5 − 7/10 =
  16. 16.7/10 − 1/5 =
  17. 17.5/6 − 5/9 =
  18. 18.4/5 − 2/3 =
  19. 19.7/10 − 2/3 =
  20. 20.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  21. 21.1/3 − 1/4 =
  22. 22.5/6 − 1/5 =
  23. 23.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  24. 24.5/7 − 1/2 =
  25. 25.2/3 − 3/7 =
  26. 26.7/8 − 1/2 =
  27. 27.3/8 − 1/4 =
  28. 28.3/4 − 3/8 =
  29. 29.Diya has a ribbon 5/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  30. 30.2/3 − 1/9 =
  31. 31.1/2 − 1/10 =
  32. 32.Tara has a ribbon 7/8 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  33. 33.7/9 − 1/2 =
  34. 34.5/6 − 3/8 =
  35. 35.7/10 − 1/6 =
  36. 36.A bottle has 1/2 litre of juice. Ishaan drinks 1/7 litre. How much juice is left (in litres)? =
  37. 37.2/5 − 1/10 =
  38. 38.A tank is 3/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  39. 39.A bottle has 4/9 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  40. 40.A tank is 4/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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