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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 887 · 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. 1.97³ =
  2. 2.25³ =
  3. 3.21³ =
  4. 4.41³ =
  5. 5.81³ =
  6. 6.71³ =
  7. 7.71³ =
  8. 8.92³ =
  9. 9.85³ =
  10. 10.31³ =
  11. 11.41³ =
  12. 12.51³ =
  13. 13.49³ =
  14. 14.96³ =
  15. 15.94³ =
  16. 16.66³ =
  17. 17.22³ =
  18. 18.21³ =
  19. 19.64³ =
  20. 20.88³ =
  21. 21.41³ =
  22. 22.49³ =
  23. 23.54³ =
  24. 24.47³ =
  25. 25.61³ =
  26. 26.93³ =
  27. 27.25³ =
  28. 28.27³ =
  29. 29.59³ =
  30. 30.91³ =
  31. 31.18³ =
  32. 32.91³ =
  33. 33.62³ =
  34. 34.16³ =
  35. 35.21³ =
  36. 36.35³ =
  37. 37.34³ =
  38. 38.74³ =
  39. 39.16³ =
  40. 40.93³ =

Answer key

  1. 912673
  2. 15625
  3. 9261
  4. 68921
  5. 531441
  6. 357911
  7. 357911
  8. 778688
  9. 614125
  10. 29791
  11. 68921
  12. 132651
  13. 117649
  14. 884736
  15. 830584
  16. 287496
  17. 10648
  18. 9261
  19. 262144
  20. 681472
  21. 68921
  22. 117649
  23. 157464
  24. 103823
  25. 226981
  26. 804357
  27. 15625
  28. 19683
  29. 205379
  30. 753571
  31. 5832
  32. 753571
  33. 238328
  34. 4096
  35. 9261
  36. 42875
  37. 39304
  38. 405224
  39. 4096
  40. 804357

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