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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 647 · 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. 1.41³ =
  2. 2.65³ =
  3. 3.18³ =
  4. 4.92³ =
  5. 5.71³ =
  6. 6.36³ =
  7. 7.65³ =
  8. 8.26³ =
  9. 9.56³ =
  10. 10.78³ =
  11. 11.85³ =
  12. 12.62³ =
  13. 13.49³ =
  14. 14.73³ =
  15. 15.18³ =
  16. 16.31³ =
  17. 17.77³ =
  18. 18.96³ =
  19. 19.81³ =
  20. 20.78³ =
  21. 21.78³ =
  22. 22.86³ =
  23. 23.11³ =
  24. 24.58³ =
  25. 25.28³ =
  26. 26.23³ =
  27. 27.87³ =
  28. 28.95³ =
  29. 29.92³ =
  30. 30.61³ =
  31. 31.17³ =
  32. 32.43³ =
  33. 33.66³ =
  34. 34.16³ =
  35. 35.77³ =
  36. 36.48³ =
  37. 37.15³ =
  38. 38.49³ =
  39. 39.64³ =
  40. 40.71³ =

Answer key

  1. 68921
  2. 274625
  3. 5832
  4. 778688
  5. 357911
  6. 46656
  7. 274625
  8. 17576
  9. 175616
  10. 474552
  11. 614125
  12. 238328
  13. 117649
  14. 389017
  15. 5832
  16. 29791
  17. 456533
  18. 884736
  19. 531441
  20. 474552
  21. 474552
  22. 636056
  23. 1331
  24. 195112
  25. 21952
  26. 12167
  27. 658503
  28. 857375
  29. 778688
  30. 226981
  31. 4913
  32. 79507
  33. 287496
  34. 4096
  35. 456533
  36. 110592
  37. 3375
  38. 117649
  39. 262144
  40. 357911

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