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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 977 · 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 − 1/6 =
  2. 2.1/4 − 1/8 =
  3. 3.A bottle has 3/4 litre of juice. Tara drinks 7/10 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 2/3 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 1/4 litre of juice. Arjun drinks 1/10 litre. How much juice is left (in litres)? =
  6. 6.1/2 − 1/5 =
  7. 7.Anaya has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  8. 8.3/4 − 3/8 =
  9. 9.A bottle has 8/9 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  10. 10.Vihaan has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  11. 11.6/7 − 1/4 =
  12. 12.A bottle has 1/6 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  13. 13.A bottle has 1/2 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  14. 14.A bottle has 4/9 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 4/5 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  16. 16.5/6 − 5/8 =
  17. 17.4/9 − 1/6 =
  18. 18.A bottle has 1/2 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  19. 19.Diya has a ribbon 7/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  20. 20.3/5 − 1/6 =
  21. 21.Arjun has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  22. 22.Aarav has a ribbon 9/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  23. 23.1/3 − 1/8 =
  24. 24.A bottle has 3/4 litre of juice. Meera drinks 1/8 litre. How much juice is left (in litres)? =
  25. 25.5/6 − 1/5 =
  26. 26.9/10 − 2/5 =
  27. 27.4/5 − 1/3 =
  28. 28.A bottle has 5/8 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 9/10 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  30. 30.1/6 − 1/9 =
  31. 31.1/4 − 1/5 =
  32. 32.Tara has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  33. 33.3/4 − 1/10 =
  34. 34.2/3 − 4/7 =
  35. 35.5/6 − 4/9 =
  36. 36.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  37. 37.A bottle has 3/4 litre of juice. Rohan drinks 1/7 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 3/8 litre of juice. Ishaan drinks 1/4 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 5/7 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 2/3 litre of juice. Diya drinks 1/7 litre. How much juice is left (in litres)? =

Answer key

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

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