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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 682 · 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. 1.1/3 − 3/10 =
  2. 2.5/9 − 1/3 =
  3. 3.3/4 − 3/7 =
  4. 4.A bottle has 2/7 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 1/6 litre of juice. Ishaan drinks 1/9 litre. How much juice is left (in litres)? =
  6. 6.2/3 − 2/9 =
  7. 7.3/4 − 4/7 =
  8. 8.1/3 − 1/7 =
  9. 9.7/10 − 1/2 =
  10. 10.A tank is 2/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  11. 11.A bottle has 5/6 litre of juice. Vihaan drinks 7/9 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 5/6 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  13. 13.3/4 − 3/5 =
  14. 14.A bottle has 4/5 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  15. 15.9/10 − 5/6 =
  16. 16.5/6 − 2/3 =
  17. 17.A bottle has 3/8 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  18. 18.5/6 − 1/5 =
  19. 19.Aarav has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  20. 20.3/10 − 1/5 =
  21. 21.9/10 − 2/5 =
  22. 22.A bottle has 6/7 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  23. 23.A tank is 1/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  24. 24.Kabir has a ribbon 4/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  25. 25.3/4 − 1/5 =
  26. 26.5/6 − 1/2 =
  27. 27.1/3 − 1/8 =
  28. 28.3/8 − 1/6 =
  29. 29.1/2 − 3/7 =
  30. 30.Arjun has a ribbon 1/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  31. 31.4/9 − 1/6 =
  32. 32.4/9 − 1/3 =
  33. 33.5/6 − 2/9 =
  34. 34.A bottle has 1/2 litre of juice. Kabir drinks 1/9 litre. How much juice is left (in litres)? =
  35. 35.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  36. 36.2/3 − 3/5 =
  37. 37.2/5 − 3/10 =
  38. 38.2/3 − 1/4 =
  39. 39.Vihaan has a ribbon 9/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  40. 40.5/9 − 1/2 =

Answer key

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

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