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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 948 · 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 5/9 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  2. 2.1/6 − 1/8 =
  3. 3.Anaya has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  4. 4.3/8 − 1/6 =
  5. 5.3/4 − 1/5 =
  6. 6.4/9 − 1/3 =
  7. 7.3/4 − 3/8 =
  8. 8.3/7 − 1/3 =
  9. 9.A bottle has 5/6 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  10. 10.6/7 − 1/2 =
  11. 11.A bottle has 1/3 litre of juice. Vihaan drinks 2/7 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 5/9 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  13. 13.7/10 − 3/5 =
  14. 14.2/3 − 4/9 =
  15. 15.Anaya has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  16. 16.2/5 − 1/10 =
  17. 17.5/6 − 3/10 =
  18. 18.3/4 − 3/7 =
  19. 19.5/6 − 7/9 =
  20. 20.Vihaan has a ribbon 1/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  21. 21.1/2 − 2/5 =
  22. 22.Ishaan has a ribbon 7/10 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  23. 23.Ishaan has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 2/3 litre of juice. Riya drinks 5/8 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 1/2 litre of juice. Kabir drinks 1/7 litre. How much juice is left (in litres)? =
  26. 26.3/8 − 1/4 =
  27. 27.7/9 − 1/6 =
  28. 28.3/4 − 1/10 =
  29. 29.Ishaan has a ribbon 1/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  30. 30.2/3 − 2/9 =
  31. 31.Ishaan has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  32. 32.Kabir has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  33. 33.1/2 − 2/9 =
  34. 34.6/7 − 1/3 =
  35. 35.6/7 − 1/4 =
  36. 36.7/9 − 1/2 =
  37. 37.5/9 − 1/3 =
  38. 38.3/10 − 1/4 =
  39. 39.A bottle has 3/10 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 1/2 litre of juice. Riya drinks 2/7 litre. How much juice is left (in litres)? =

Answer key

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

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