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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 758 · 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. 1.27³ =
  2. 2.73³ =
  3. 3.95³ =
  4. 4.75³ =
  5. 5.25³ =
  6. 6.21³ =
  7. 7.37³ =
  8. 8.59³ =
  9. 9.59³ =
  10. 10.49³ =
  11. 11.41³ =
  12. 12.61³ =
  13. 13.24³ =
  14. 14.89³ =
  15. 15.21³ =
  16. 16.24³ =
  17. 17.13³ =
  18. 18.86³ =
  19. 19.18³ =
  20. 20.45³ =
  21. 21.31³ =
  22. 22.57³ =
  23. 23.59³ =
  24. 24.18³ =
  25. 25.28³ =
  26. 26.99³ =
  27. 27.35³ =
  28. 28.57³ =
  29. 29.34³ =
  30. 30.59³ =
  31. 31.91³ =
  32. 32.64³ =
  33. 33.92³ =
  34. 34.74³ =
  35. 35.29³ =
  36. 36.51³ =
  37. 37.36³ =
  38. 38.33³ =
  39. 39.39³ =
  40. 40.83³ =

Answer key

  1. 19683
  2. 389017
  3. 857375
  4. 421875
  5. 15625
  6. 9261
  7. 50653
  8. 205379
  9. 205379
  10. 117649
  11. 68921
  12. 226981
  13. 13824
  14. 704969
  15. 9261
  16. 13824
  17. 2197
  18. 636056
  19. 5832
  20. 91125
  21. 29791
  22. 185193
  23. 205379
  24. 5832
  25. 21952
  26. 970299
  27. 42875
  28. 185193
  29. 39304
  30. 205379
  31. 753571
  32. 262144
  33. 778688
  34. 405224
  35. 24389
  36. 132651
  37. 46656
  38. 35937
  39. 59319
  40. 571787

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