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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 334 · 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. 1.7/8 − 5/6 =
  2. 2.1/2 − 1/8 =
  3. 3.A bottle has 5/9 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 9/10 litre of juice. Diya drinks 3/5 litre. How much juice is left (in litres)? =
  5. 5.5/9 − 1/2 =
  6. 6.A bottle has 5/7 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  7. 7.2/3 − 3/7 =
  8. 8.A bottle has 2/3 litre of juice. Tara drinks 4/9 litre. How much juice is left (in litres)? =
  9. 9.4/5 − 1/3 =
  10. 10.A bottle has 1/2 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  11. 11.Sara has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 3/4 litre of juice. Aarav drinks 1/5 litre. How much juice is left (in litres)? =
  13. 13.A bottle has 1/2 litre of juice. Meera drinks 1/5 litre. How much juice is left (in litres)? =
  14. 14.5/7 − 1/3 =
  15. 15.1/4 − 1/7 =
  16. 16.2/3 − 3/8 =
  17. 17.1/2 − 3/8 =
  18. 18.Meera has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  19. 19.2/3 − 1/9 =
  20. 20.Vihaan has a ribbon 7/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  21. 21.2/3 − 5/9 =
  22. 22.1/4 − 1/8 =
  23. 23.5/6 − 4/5 =
  24. 24.Aarav has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  25. 25.6/7 − 3/4 =
  26. 26.2/3 − 2/7 =
  27. 27.A bottle has 7/10 litre of juice. Rohan drinks 2/5 litre. How much juice is left (in litres)? =
  28. 28.9/10 − 1/3 =
  29. 29.Vihaan has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  30. 30.Kabir has a ribbon 5/6 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  31. 31.A tank is 1/2 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  32. 32.A tank is 5/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  33. 33.9/10 − 1/4 =
  34. 34.A bottle has 3/10 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 7/9 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  36. 36.3/8 − 1/3 =
  37. 37.1/3 − 2/7 =
  38. 38.7/10 − 1/4 =
  39. 39.A bottle has 5/6 litre of juice. Vihaan drinks 2/5 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 5/7 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =

Answer key

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

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