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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 579 · 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. 1.5/9 − 1/3 =
  2. 2.A bottle has 7/9 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  3. 3.1/2 − 3/8 =
  4. 4.A bottle has 4/5 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 1/6 litre of juice. Sara drinks 1/8 litre. How much juice is left (in litres)? =
  6. 6.A tank is 1/2 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  7. 7.2/3 − 1/8 =
  8. 8.4/5 − 7/10 =
  9. 9.3/7 − 1/3 =
  10. 10.A bottle has 2/3 litre of juice. Kabir drinks 4/7 litre. How much juice is left (in litres)? =
  11. 11.1/3 − 1/9 =
  12. 12.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? =
  13. 13.5/6 − 2/3 =
  14. 14.Aarav has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  15. 15.5/6 − 4/9 =
  16. 16.Aarav has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  17. 17.Tara has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  18. 18.8/9 − 1/6 =
  19. 19.A bottle has 3/4 litre of juice. Riya drinks 2/7 litre. How much juice is left (in litres)? =
  20. 20.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? =
  21. 21.9/10 − 1/5 =
  22. 22.A bottle has 3/8 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  23. 23.3/4 − 1/6 =
  24. 24.5/7 − 1/4 =
  25. 25.7/9 − 1/3 =
  26. 26.A tank is 9/10 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  27. 27.1/3 − 1/6 =
  28. 28.4/5 − 2/3 =
  29. 29.3/4 − 2/3 =
  30. 30.Tara has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  31. 31.2/3 − 4/7 =
  32. 32.4/7 − 1/3 =
  33. 33.3/10 − 1/6 =
  34. 34.7/9 − 1/2 =
  35. 35.3/4 − 4/7 =
  36. 36.5/6 − 1/4 =
  37. 37.A bottle has 5/6 litre of juice. Meera drinks 5/9 litre. How much juice is left (in litres)? =
  38. 38.4/5 − 1/2 =
  39. 39.2/3 − 5/8 =
  40. 40.2/3 − 3/7 =

Answer key

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

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