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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 691 · 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. 1.31³ =
  2. 2.89³ =
  3. 3.46³ =
  4. 4.38³ =
  5. 5.85³ =
  6. 6.12³ =
  7. 7.18³ =
  8. 8.47³ =
  9. 9.31³ =
  10. 10.62³ =
  11. 11.99³ =
  12. 12.95³ =
  13. 13.45³ =
  14. 14.86³ =
  15. 15.25³ =
  16. 16.78³ =
  17. 17.97³ =
  18. 18.26³ =
  19. 19.86³ =
  20. 20.48³ =
  21. 21.58³ =
  22. 22.64³ =
  23. 23.86³ =
  24. 24.21³ =
  25. 25.66³ =
  26. 26.35³ =
  27. 27.97³ =
  28. 28.99³ =
  29. 29.19³ =
  30. 30.98³ =
  31. 31.84³ =
  32. 32.84³ =
  33. 33.28³ =
  34. 34.56³ =
  35. 35.16³ =
  36. 36.24³ =
  37. 37.97³ =
  38. 38.73³ =
  39. 39.32³ =
  40. 40.36³ =

Answer key

  1. 29791
  2. 704969
  3. 97336
  4. 54872
  5. 614125
  6. 1728
  7. 5832
  8. 103823
  9. 29791
  10. 238328
  11. 970299
  12. 857375
  13. 91125
  14. 636056
  15. 15625
  16. 474552
  17. 912673
  18. 17576
  19. 636056
  20. 110592
  21. 195112
  22. 262144
  23. 636056
  24. 9261
  25. 287496
  26. 42875
  27. 912673
  28. 970299
  29. 6859
  30. 941192
  31. 592704
  32. 592704
  33. 21952
  34. 175616
  35. 4096
  36. 13824
  37. 912673
  38. 389017
  39. 32768
  40. 46656

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