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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 246 · 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. 1.14³ =
  2. 2.78³ =
  3. 3.23³ =
  4. 4.86³ =
  5. 5.41³ =
  6. 6.98³ =
  7. 7.72³ =
  8. 8.31³ =
  9. 9.96³ =
  10. 10.61³ =
  11. 11.66³ =
  12. 12.21³ =
  13. 13.49³ =
  14. 14.31³ =
  15. 15.92³ =
  16. 16.28³ =
  17. 17.68³ =
  18. 18.75³ =
  19. 19.42³ =
  20. 20.83³ =
  21. 21.82³ =
  22. 22.32³ =
  23. 23.14³ =
  24. 24.74³ =
  25. 25.44³ =
  26. 26.83³ =
  27. 27.21³ =
  28. 28.96³ =
  29. 29.36³ =
  30. 30.81³ =
  31. 31.81³ =
  32. 32.93³ =
  33. 33.41³ =
  34. 34.58³ =
  35. 35.68³ =
  36. 36.71³ =
  37. 37.16³ =
  38. 38.35³ =
  39. 39.59³ =
  40. 40.91³ =

Answer key

  1. 2744
  2. 474552
  3. 12167
  4. 636056
  5. 68921
  6. 941192
  7. 373248
  8. 29791
  9. 884736
  10. 226981
  11. 287496
  12. 9261
  13. 117649
  14. 29791
  15. 778688
  16. 21952
  17. 314432
  18. 421875
  19. 74088
  20. 571787
  21. 551368
  22. 32768
  23. 2744
  24. 405224
  25. 85184
  26. 571787
  27. 9261
  28. 884736
  29. 46656
  30. 531441
  31. 531441
  32. 804357
  33. 68921
  34. 195112
  35. 314432
  36. 357911
  37. 4096
  38. 42875
  39. 205379
  40. 753571

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