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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 979 · 40 sums
TalentJR

The trick (Anurupyena): Top row: a³, a²b, ab², b³ (each term is the one before × b ÷ a). Under the two middle terms write double of them, and add: a³ | 3a²b | 3ab² | b³. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.59³ =
  2. 2.13³ =
  3. 3.24³ =
  4. 4.51³ =
  5. 5.11³ =
  6. 6.58³ =
  7. 7.41³ =
  8. 8.62³ =
  9. 9.45³ =
  10. 10.44³ =
  11. 11.61³ =
  12. 12.55³ =
  13. 13.55³ =
  14. 14.17³ =
  15. 15.71³ =
  16. 16.17³ =
  17. 17.24³ =
  18. 18.52³ =
  19. 19.21³ =
  20. 20.71³ =
  21. 21.32³ =
  22. 22.38³ =
  23. 23.31³ =
  24. 24.81³ =
  25. 25.52³ =
  26. 26.21³ =
  27. 27.39³ =
  28. 28.73³ =
  29. 29.73³ =
  30. 30.81³ =
  31. 31.51³ =
  32. 32.42³ =
  33. 33.76³ =
  34. 34.83³ =
  35. 35.29³ =
  36. 36.89³ =
  37. 37.45³ =
  38. 38.31³ =
  39. 39.41³ =
  40. 40.12³ =

Answer key

  1. 205379
  2. 2197
  3. 13824
  4. 132651
  5. 1331
  6. 195112
  7. 68921
  8. 238328
  9. 91125
  10. 85184
  11. 226981
  12. 166375
  13. 166375
  14. 4913
  15. 357911
  16. 4913
  17. 13824
  18. 140608
  19. 9261
  20. 357911
  21. 32768
  22. 54872
  23. 29791
  24. 531441
  25. 140608
  26. 9261
  27. 59319
  28. 389017
  29. 389017
  30. 531441
  31. 132651
  32. 74088
  33. 438976
  34. 571787
  35. 24389
  36. 704969
  37. 91125
  38. 29791
  39. 68921
  40. 1728

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