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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 883 · 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. 1.4/5 − 1/4 =
  2. 2.2/9 − 1/6 =
  3. 3.8/9 − 2/3 =
  4. 4.5/6 − 1/2 =
  5. 5.7/9 − 1/3 =
  6. 6.4/7 − 1/3 =
  7. 7.5/8 − 1/3 =
  8. 8.2/3 − 5/9 =
  9. 9.A bottle has 1/2 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  10. 10.3/10 − 1/5 =
  11. 11.2/3 − 1/8 =
  12. 12.4/9 − 1/3 =
  13. 13.A bottle has 2/3 litre of juice. Aarav drinks 5/8 litre. How much juice is left (in litres)? =
  14. 14.Sara has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  15. 15.A bottle has 5/6 litre of juice. Sara drinks 2/5 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 8/9 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  17. 17.1/2 − 1/10 =
  18. 18.2/3 − 4/9 =
  19. 19.A bottle has 3/4 litre of juice. Rohan drinks 2/7 litre. How much juice is left (in litres)? =
  20. 20.A tank is 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  21. 21.9/10 − 2/3 =
  22. 22.7/8 − 2/3 =
  23. 23.9/10 − 3/4 =
  24. 24.7/10 − 2/3 =
  25. 25.2/5 − 1/4 =
  26. 26.A bottle has 8/9 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  27. 27.A bottle has 1/2 litre of juice. Anaya drinks 1/9 litre. How much juice is left (in litres)? =
  28. 28.3/4 − 1/6 =
  29. 29.A bottle has 2/3 litre of juice. Meera drinks 1/10 litre. How much juice is left (in litres)? =
  30. 30.3/4 − 3/5 =
  31. 31.Vihaan has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  32. 32.A bottle has 4/5 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 1/3 litre of juice. Riya drinks 2/9 litre. How much juice is left (in litres)? =
  34. 34.A bottle has 1/2 litre of juice. Sara drinks 2/7 litre. How much juice is left (in litres)? =
  35. 35.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  36. 36.A bottle has 2/3 litre of juice. Arjun drinks 3/8 litre. How much juice is left (in litres)? =
  37. 37.3/4 − 3/7 =
  38. 38.Meera has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  39. 39.A bottle has 5/6 litre of juice. Kabir drinks 7/9 litre. How much juice is left (in litres)? =
  40. 40.2/3 − 2/9 =

Answer key

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

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