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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 951 · 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 2/3 litre of juice. Anaya drinks 4/7 litre. How much juice is left (in litres)? =
  2. 2.4/7 − 1/4 =
  3. 3.6/7 − 3/4 =
  4. 4.9/10 − 1/6 =
  5. 5.2/3 − 3/7 =
  6. 6.3/4 − 4/7 =
  7. 7.3/4 − 3/8 =
  8. 8.3/5 − 3/10 =
  9. 9.6/7 − 1/4 =
  10. 10.3/4 − 2/7 =
  11. 11.Rohan has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 1/2 litre of juice. Aarav drinks 4/9 litre. How much juice is left (in litres)? =
  13. 13.7/10 − 2/3 =
  14. 14.A bottle has 4/7 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 9/10 litre of juice. Riya drinks 2/5 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 2/3 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  17. 17.Ishaan has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  18. 18.Vihaan has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  19. 19.1/3 − 1/7 =
  20. 20.3/4 − 2/3 =
  21. 21.5/7 − 2/3 =
  22. 22.5/6 − 3/4 =
  23. 23.1/2 − 3/8 =
  24. 24.A tank is 2/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  25. 25.9/10 − 1/3 =
  26. 26.Aarav has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  27. 27.Kabir has a ribbon 7/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  28. 28.Anaya has a ribbon 7/8 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  29. 29.5/7 − 1/3 =
  30. 30.A bottle has 3/4 litre of juice. Meera drinks 7/10 litre. How much juice is left (in litres)? =
  31. 31.A tank is 5/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  32. 32.Vihaan has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  33. 33.Tara has a ribbon 1/2 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  34. 34.A bottle has 7/10 litre of juice. Riya drinks 3/5 litre. How much juice is left (in litres)? =
  35. 35.1/2 − 1/9 =
  36. 36.7/10 − 3/5 =
  37. 37.5/6 − 1/5 =
  38. 38.2/3 − 4/9 =
  39. 39.3/4 − 5/8 =
  40. 40.A bottle has 3/4 litre of juice. Anaya drinks 2/5 litre. How much juice is left (in litres)? =

Answer key

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

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