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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 634 · 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. 1.81³ =
  2. 2.15³ =
  3. 3.19³ =
  4. 4.19³ =
  5. 5.42³ =
  6. 6.84³ =
  7. 7.73³ =
  8. 8.64³ =
  9. 9.86³ =
  10. 10.85³ =
  11. 11.68³ =
  12. 12.47³ =
  13. 13.27³ =
  14. 14.85³ =
  15. 15.27³ =
  16. 16.27³ =
  17. 17.81³ =
  18. 18.58³ =
  19. 19.52³ =
  20. 20.71³ =
  21. 21.77³ =
  22. 22.27³ =
  23. 23.31³ =
  24. 24.49³ =
  25. 25.95³ =
  26. 26.55³ =
  27. 27.68³ =
  28. 28.34³ =
  29. 29.31³ =
  30. 30.14³ =
  31. 31.81³ =
  32. 32.78³ =
  33. 33.86³ =
  34. 34.61³ =
  35. 35.74³ =
  36. 36.88³ =
  37. 37.93³ =
  38. 38.57³ =
  39. 39.38³ =
  40. 40.71³ =

Answer key

  1. 531441
  2. 3375
  3. 6859
  4. 6859
  5. 74088
  6. 592704
  7. 389017
  8. 262144
  9. 636056
  10. 614125
  11. 314432
  12. 103823
  13. 19683
  14. 614125
  15. 19683
  16. 19683
  17. 531441
  18. 195112
  19. 140608
  20. 357911
  21. 456533
  22. 19683
  23. 29791
  24. 117649
  25. 857375
  26. 166375
  27. 314432
  28. 39304
  29. 29791
  30. 2744
  31. 531441
  32. 474552
  33. 636056
  34. 226981
  35. 405224
  36. 681472
  37. 804357
  38. 185193
  39. 54872
  40. 357911

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