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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 999 · 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. 1.5/6 − 1/5 =
  2. 2.1/4 − 1/7 =
  3. 3.Sara has a ribbon 3/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  4. 4.7/8 − 1/2 =
  5. 5.2/5 − 1/10 =
  6. 6.1/5 − 1/6 =
  7. 7.8/9 − 1/2 =
  8. 8.5/6 − 3/5 =
  9. 9.A bottle has 1/4 litre of juice. Anaya drinks 1/7 litre. How much juice is left (in litres)? =
  10. 10.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  11. 11.Kabir has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  12. 12.Tara has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  13. 13.3/8 − 1/3 =
  14. 14.A bottle has 8/9 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  15. 15.5/9 − 1/2 =
  16. 16.4/5 − 1/2 =
  17. 17.A bottle has 1/2 litre of juice. Arjun drinks 2/7 litre. How much juice is left (in litres)? =
  18. 18.Vihaan has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 3/4 litre of juice. Rohan drinks 1/7 litre. How much juice is left (in litres)? =
  20. 20.5/6 − 4/9 =
  21. 21.3/4 − 7/10 =
  22. 22.4/5 − 3/10 =
  23. 23.Aarav has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  24. 24.4/5 − 1/4 =
  25. 25.3/10 − 1/4 =
  26. 26.A bottle has 3/4 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  27. 27.4/5 − 1/10 =
  28. 28.A bottle has 5/6 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  29. 29.Sara has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  30. 30.5/8 − 1/3 =
  31. 31.2/9 − 1/6 =
  32. 32.A bottle has 1/4 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  33. 33.Diya has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  34. 34.4/7 − 1/2 =
  35. 35.A bottle has 5/7 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  36. 36.A tank is 3/4 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  37. 37.2/7 − 1/4 =
  38. 38.A bottle has 9/10 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  39. 39.3/5 − 1/4 =
  40. 40.7/10 − 1/2 =

Answer key

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

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