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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 902 · 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. 1.2/3 − 1/8 =
  2. 2.1/6 − 1/9 =
  3. 3.Ishaan has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 2/3 litre of juice. Tara drinks 4/9 litre. How much juice is left (in litres)? =
  5. 5.3/4 − 7/10 =
  6. 6.1/6 − 1/10 =
  7. 7.1/2 − 1/7 =
  8. 8.7/9 − 2/3 =
  9. 9.Rohan has a ribbon 3/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  10. 10.2/3 − 3/8 =
  11. 11.A bottle has 2/3 litre of juice. Anaya drinks 2/9 litre. How much juice is left (in litres)? =
  12. 12.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  14. 14.A tank is 8/9 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  15. 15.3/8 − 1/3 =
  16. 16.A bottle has 3/7 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  17. 17.3/4 − 1/2 =
  18. 18.A bottle has 2/3 litre of juice. Tara drinks 1/7 litre. How much juice is left (in litres)? =
  19. 19.1/2 − 3/10 =
  20. 20.A bottle has 7/8 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  21. 21.9/10 − 2/3 =
  22. 22.9/10 − 2/5 =
  23. 23.Kabir has a ribbon 5/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  24. 24.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  25. 25.3/5 − 1/10 =
  26. 26.Rohan has a ribbon 1/2 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  27. 27.3/4 − 2/5 =
  28. 28.8/9 − 1/6 =
  29. 29.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  30. 30.Meera has a ribbon 1/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  31. 31.Diya has a ribbon 3/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  32. 32.3/5 − 1/6 =
  33. 33.A bottle has 3/4 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  34. 34.5/6 − 2/9 =
  35. 35.7/8 − 2/3 =
  36. 36.3/8 − 1/4 =
  37. 37.A tank is 1/2 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  38. 38.A bottle has 6/7 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  39. 39.7/10 − 3/5 =
  40. 40.5/6 − 2/3 =

Answer key

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

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