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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 980 · 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 − 1/5 =
  2. 2.2/3 − 2/9 =
  3. 3.2/7 − 1/4 =
  4. 4.1/2 − 1/10 =
  5. 5.2/3 − 1/8 =
  6. 6.1/2 − 4/9 =
  7. 7.1/2 − 2/9 =
  8. 8.A bottle has 4/5 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  9. 9.1/3 − 1/8 =
  10. 10.4/5 − 3/4 =
  11. 11.Anaya has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  12. 12.9/10 − 1/4 =
  13. 13.6/7 − 1/4 =
  14. 14.4/5 − 2/3 =
  15. 15.5/8 − 1/6 =
  16. 16.3/5 − 1/6 =
  17. 17.A tank is 3/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  18. 18.Meera has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 2/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  20. 20.Aarav has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  21. 21.1/6 − 1/8 =
  22. 22.1/2 − 3/7 =
  23. 23.Vihaan has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  24. 24.2/3 − 2/7 =
  25. 25.A bottle has 2/5 litre of juice. Aarav drinks 3/10 litre. How much juice is left (in litres)? =
  26. 26.Rohan has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  27. 27.1/3 − 1/5 =
  28. 28.A tank is 7/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  29. 29.2/3 − 5/8 =
  30. 30.1/6 − 1/9 =
  31. 31.7/10 − 1/3 =
  32. 32.1/4 − 1/10 =
  33. 33.6/7 − 1/3 =
  34. 34.5/6 − 5/8 =
  35. 35.7/8 − 1/6 =
  36. 36.2/5 − 1/3 =
  37. 37.Aarav has a ribbon 4/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  38. 38.A tank is 2/3 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  39. 39.Ishaan has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 2/3 litre of juice. Kabir drinks 5/9 litre. How much juice is left (in litres)? =

Answer key

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

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