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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 156 · 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.A bottle has 7/9 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  2. 2.1/4 − 1/10 =
  3. 3.2/9 − 1/6 =
  4. 4.2/3 − 4/9 =
  5. 5.A bottle has 3/5 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 1/2 litre of juice. Rohan drinks 1/8 litre. How much juice is left (in litres)? =
  7. 7.5/8 − 1/6 =
  8. 8.9/10 − 1/5 =
  9. 9.6/7 − 1/2 =
  10. 10.A bottle has 5/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 2/3 litre of juice. Anaya drinks 3/8 litre. How much juice is left (in litres)? =
  12. 12.A tank is 3/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 7/8 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 3/5 litre of juice. Diya drinks 3/10 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 2/5 litre of juice. Tara drinks 1/10 litre. How much juice is left (in litres)? =
  17. 17.A bottle has 5/7 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  18. 18.2/3 − 2/7 =
  19. 19.6/7 − 2/3 =
  20. 20.1/3 − 1/9 =
  21. 21.3/4 − 3/10 =
  22. 22.A bottle has 8/9 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 1/3 litre of juice. Diya drinks 2/9 litre. How much juice is left (in litres)? =
  24. 24.Sara has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  25. 25.2/3 − 3/10 =
  26. 26.5/8 − 1/3 =
  27. 27.Diya has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  28. 28.Vihaan has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  29. 29.4/5 − 2/3 =
  30. 30.A bottle has 3/4 litre of juice. Rohan drinks 5/7 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 7/8 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  32. 32.3/4 − 5/8 =
  33. 33.3/4 − 3/7 =
  34. 34.A tank is 2/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  35. 35.5/9 − 1/6 =
  36. 36.4/7 − 1/2 =
  37. 37.4/5 − 1/2 =
  38. 38.7/10 − 1/3 =
  39. 39.1/4 − 1/8 =
  40. 40.5/6 − 3/5 =

Answer key

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

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