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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 488 · 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.Anaya has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  2. 2.A bottle has 5/6 litre of juice. Diya drinks 2/9 litre. How much juice is left (in litres)? =
  3. 3.5/6 − 3/5 =
  4. 4.Tara has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  5. 5.1/3 − 2/9 =
  6. 6.1/3 − 1/9 =
  7. 7.1/5 − 1/10 =
  8. 8.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  9. 9.5/8 − 1/2 =
  10. 10.A bottle has 1/2 litre of juice. Vihaan drinks 1/9 litre. How much juice is left (in litres)? =
  11. 11.1/3 − 1/5 =
  12. 12.A bottle has 9/10 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  13. 13.8/9 − 5/6 =
  14. 14.3/8 − 1/4 =
  15. 15.5/6 − 3/8 =
  16. 16.1/2 − 1/7 =
  17. 17.3/10 − 1/5 =
  18. 18.7/10 − 2/3 =
  19. 19.Aarav has a ribbon 2/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  20. 20.Diya has a ribbon 3/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  21. 21.A bottle has 3/4 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  22. 22.A bottle has 2/3 litre of juice. Ishaan drinks 4/9 litre. How much juice is left (in litres)? =
  23. 23.9/10 − 2/3 =
  24. 24.3/4 − 1/8 =
  25. 25.5/9 − 1/2 =
  26. 26.7/10 − 1/5 =
  27. 27.A tank is 7/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 1/2 litre of juice. Diya drinks 3/10 litre. How much juice is left (in litres)? =
  29. 29.A tank is 2/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  30. 30.Aarav has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  31. 31.1/3 − 1/8 =
  32. 32.A bottle has 3/4 litre of juice. Vihaan drinks 5/8 litre. How much juice is left (in litres)? =
  33. 33.3/5 − 1/10 =
  34. 34.5/6 − 1/8 =
  35. 35.2/5 − 1/10 =
  36. 36.A bottle has 1/6 litre of juice. Rohan drinks 1/8 litre. How much juice is left (in litres)? =
  37. 37.1/2 − 3/10 =
  38. 38.A bottle has 3/4 litre of juice. Diya drinks 4/7 litre. How much juice is left (in litres)? =
  39. 39.Ishaan has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  40. 40.2/3 − 5/8 =

Answer key

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

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