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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 490 · 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. 1.61³ =
  2. 2.79³ =
  3. 3.83³ =
  4. 4.45³ =
  5. 5.18³ =
  6. 6.65³ =
  7. 7.11³ =
  8. 8.53³ =
  9. 9.95³ =
  10. 10.32³ =
  11. 11.31³ =
  12. 12.77³ =
  13. 13.73³ =
  14. 14.25³ =
  15. 15.86³ =
  16. 16.25³ =
  17. 17.47³ =
  18. 18.14³ =
  19. 19.18³ =
  20. 20.34³ =
  21. 21.16³ =
  22. 22.55³ =
  23. 23.68³ =
  24. 24.29³ =
  25. 25.73³ =
  26. 26.86³ =
  27. 27.26³ =
  28. 28.55³ =
  29. 29.92³ =
  30. 30.41³ =
  31. 31.16³ =
  32. 32.56³ =
  33. 33.82³ =
  34. 34.55³ =
  35. 35.57³ =
  36. 36.79³ =
  37. 37.94³ =
  38. 38.65³ =
  39. 39.27³ =
  40. 40.89³ =

Answer key

  1. 226981
  2. 493039
  3. 571787
  4. 91125
  5. 5832
  6. 274625
  7. 1331
  8. 148877
  9. 857375
  10. 32768
  11. 29791
  12. 456533
  13. 389017
  14. 15625
  15. 636056
  16. 15625
  17. 103823
  18. 2744
  19. 5832
  20. 39304
  21. 4096
  22. 166375
  23. 314432
  24. 24389
  25. 389017
  26. 636056
  27. 17576
  28. 166375
  29. 778688
  30. 68921
  31. 4096
  32. 175616
  33. 551368
  34. 166375
  35. 185193
  36. 493039
  37. 830584
  38. 274625
  39. 19683
  40. 704969

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