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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 470 · 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. 1.35³ =
  2. 2.33³ =
  3. 3.49³ =
  4. 4.34³ =
  5. 5.66³ =
  6. 6.25³ =
  7. 7.41³ =
  8. 8.18³ =
  9. 9.12³ =
  10. 10.32³ =
  11. 11.15³ =
  12. 12.71³ =
  13. 13.31³ =
  14. 14.13³ =
  15. 15.71³ =
  16. 16.79³ =
  17. 17.31³ =
  18. 18.96³ =
  19. 19.71³ =
  20. 20.33³ =
  21. 21.89³ =
  22. 22.21³ =
  23. 23.27³ =
  24. 24.26³ =
  25. 25.43³ =
  26. 26.52³ =
  27. 27.48³ =
  28. 28.58³ =
  29. 29.65³ =
  30. 30.78³ =
  31. 31.19³ =
  32. 32.45³ =
  33. 33.64³ =
  34. 34.13³ =
  35. 35.45³ =
  36. 36.71³ =
  37. 37.21³ =
  38. 38.84³ =
  39. 39.33³ =
  40. 40.81³ =

Answer key

  1. 42875
  2. 35937
  3. 117649
  4. 39304
  5. 287496
  6. 15625
  7. 68921
  8. 5832
  9. 1728
  10. 32768
  11. 3375
  12. 357911
  13. 29791
  14. 2197
  15. 357911
  16. 493039
  17. 29791
  18. 884736
  19. 357911
  20. 35937
  21. 704969
  22. 9261
  23. 19683
  24. 17576
  25. 79507
  26. 140608
  27. 110592
  28. 195112
  29. 274625
  30. 474552
  31. 6859
  32. 91125
  33. 262144
  34. 2197
  35. 91125
  36. 357911
  37. 9261
  38. 592704
  39. 35937
  40. 531441

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