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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 379 · 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. 1.8/9 − 1/2 =
  2. 2.A bottle has 2/5 litre of juice. Arjun drinks 1/10 litre. How much juice is left (in litres)? =
  3. 3.3/7 − 1/3 =
  4. 4.A bottle has 3/5 litre of juice. Vihaan drinks 1/10 litre. How much juice is left (in litres)? =
  5. 5.2/3 − 1/2 =
  6. 6.5/6 − 7/9 =
  7. 7.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 7/10 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  9. 9.Aarav has a ribbon 7/10 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  10. 10.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? =
  11. 11.A bottle has 3/5 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 5/7 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  13. 13.3/10 − 1/5 =
  14. 14.2/3 − 1/8 =
  15. 15.4/5 − 3/10 =
  16. 16.2/3 − 4/7 =
  17. 17.A bottle has 1/6 litre of juice. Arjun drinks 1/9 litre. How much juice is left (in litres)? =
  18. 18.4/9 − 1/3 =
  19. 19.3/4 − 5/7 =
  20. 20.Aarav has a ribbon 1/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  21. 21.A tank is 5/6 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  22. 22.3/10 − 1/6 =
  23. 23.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  24. 24.4/5 − 3/4 =
  25. 25.Aarav has a ribbon 3/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  26. 26.4/5 − 7/10 =
  27. 27.A bottle has 7/9 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  28. 28.4/5 − 1/4 =
  29. 29.2/3 − 1/5 =
  30. 30.A bottle has 3/10 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 8/9 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  32. 32.7/8 − 1/3 =
  33. 33.2/5 − 3/10 =
  34. 34.3/4 − 1/5 =
  35. 35.A bottle has 2/3 litre of juice. Ishaan drinks 4/7 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 1/6 litre of juice. Ishaan drinks 1/9 litre. How much juice is left (in litres)? =
  37. 37.4/9 − 1/6 =
  38. 38.5/7 − 2/3 =
  39. 39.6/7 − 1/3 =
  40. 40.A bottle has 9/10 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =

Answer key

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

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