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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 409 · 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. 1.29³ =
  2. 2.56³ =
  3. 3.58³ =
  4. 4.92³ =
  5. 5.21³ =
  6. 6.19³ =
  7. 7.44³ =
  8. 8.57³ =
  9. 9.18³ =
  10. 10.15³ =
  11. 11.22³ =
  12. 12.81³ =
  13. 13.79³ =
  14. 14.12³ =
  15. 15.41³ =
  16. 16.27³ =
  17. 17.91³ =
  18. 18.31³ =
  19. 19.31³ =
  20. 20.73³ =
  21. 21.13³ =
  22. 22.18³ =
  23. 23.94³ =
  24. 24.21³ =
  25. 25.42³ =
  26. 26.62³ =
  27. 27.58³ =
  28. 28.88³ =
  29. 29.31³ =
  30. 30.39³ =
  31. 31.14³ =
  32. 32.79³ =
  33. 33.32³ =
  34. 34.39³ =
  35. 35.42³ =
  36. 36.85³ =
  37. 37.62³ =
  38. 38.75³ =
  39. 39.51³ =
  40. 40.51³ =

Answer key

  1. 24389
  2. 175616
  3. 195112
  4. 778688
  5. 9261
  6. 6859
  7. 85184
  8. 185193
  9. 5832
  10. 3375
  11. 10648
  12. 531441
  13. 493039
  14. 1728
  15. 68921
  16. 19683
  17. 753571
  18. 29791
  19. 29791
  20. 389017
  21. 2197
  22. 5832
  23. 830584
  24. 9261
  25. 74088
  26. 238328
  27. 195112
  28. 681472
  29. 29791
  30. 59319
  31. 2744
  32. 493039
  33. 32768
  34. 59319
  35. 74088
  36. 614125
  37. 238328
  38. 421875
  39. 132651
  40. 132651

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