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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 784 · 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. 1.6/7 − 1/3 =
  2. 2.A bottle has 7/9 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  3. 3.1/2 − 1/8 =
  4. 4.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 5/6 litre of juice. Rohan drinks 4/9 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 5/7 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  7. 7.3/5 − 1/4 =
  8. 8.5/7 − 2/3 =
  9. 9.A bottle has 5/8 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  10. 10.1/6 − 1/8 =
  11. 11.8/9 − 5/6 =
  12. 12.9/10 − 3/5 =
  13. 13.1/2 − 4/9 =
  14. 14.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? =
  15. 15.A bottle has 2/3 litre of juice. Vihaan drinks 3/5 litre. How much juice is left (in litres)? =
  16. 16.3/4 − 1/5 =
  17. 17.A tank is 1/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  18. 18.2/3 − 1/10 =
  19. 19.1/3 − 2/9 =
  20. 20.A bottle has 2/3 litre of juice. Arjun drinks 1/7 litre. How much juice is left (in litres)? =
  21. 21.A bottle has 4/5 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  22. 22.A bottle has 3/5 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  23. 23.1/3 − 2/7 =
  24. 24.A bottle has 9/10 litre of juice. Vihaan drinks 4/5 litre. How much juice is left (in litres)? =
  25. 25.3/8 − 1/4 =
  26. 26.7/8 − 3/4 =
  27. 27.5/7 − 1/2 =
  28. 28.5/6 − 1/5 =
  29. 29.4/5 − 7/10 =
  30. 30.5/6 − 1/3 =
  31. 31.Aarav has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  32. 32.3/4 − 2/7 =
  33. 33.1/2 − 3/7 =
  34. 34.Tara has a ribbon 7/10 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  35. 35.Kabir has a ribbon 2/3 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.9/10 − 1/6 =
  37. 37.A bottle has 4/5 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  38. 38.1/4 − 1/10 =
  39. 39.A bottle has 1/2 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  40. 40.2/3 − 3/7 =

Answer key

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

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