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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 150 · 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. 1.1/4 − 1/6 =
  2. 2.7/8 − 1/3 =
  3. 3.A bottle has 3/4 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  4. 4.5/6 − 7/9 =
  5. 5.2/5 − 1/10 =
  6. 6.A bottle has 1/3 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =
  7. 7.9/10 − 1/5 =
  8. 8.1/2 − 1/8 =
  9. 9.1/3 − 3/10 =
  10. 10.A bottle has 7/9 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 5/8 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  12. 12.3/4 − 3/7 =
  13. 13.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 7/9 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  15. 15.3/4 − 3/5 =
  16. 16.8/9 − 1/3 =
  17. 17.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? =
  18. 18.A bottle has 4/5 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  19. 19.7/10 − 1/5 =
  20. 20.4/5 − 1/4 =
  21. 21.5/8 − 1/4 =
  22. 22.5/9 − 1/6 =
  23. 23.A bottle has 9/10 litre of juice. Aarav drinks 5/6 litre. How much juice is left (in litres)? =
  24. 24.A bottle has 6/7 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  25. 25.3/4 − 2/7 =
  26. 26.4/7 − 1/2 =
  27. 27.7/10 − 1/3 =
  28. 28.1/3 − 1/6 =
  29. 29.Vihaan has a ribbon 3/4 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.2/5 − 1/3 =
  31. 31.5/6 − 4/9 =
  32. 32.Diya has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  33. 33.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 1/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  35. 35.2/3 − 2/9 =
  36. 36.A bottle has 7/10 litre of juice. Aarav drinks 3/5 litre. How much juice is left (in litres)? =
  37. 37.Arjun has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  38. 38.Sara has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  39. 39.7/8 − 2/3 =
  40. 40.2/3 − 2/7 =

Answer key

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

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