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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 727 · 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. 1.99³ =
  2. 2.31³ =
  3. 3.57³ =
  4. 4.18³ =
  5. 5.29³ =
  6. 6.16³ =
  7. 7.11³ =
  8. 8.89³ =
  9. 9.58³ =
  10. 10.84³ =
  11. 11.47³ =
  12. 12.36³ =
  13. 13.67³ =
  14. 14.31³ =
  15. 15.41³ =
  16. 16.75³ =
  17. 17.87³ =
  18. 18.37³ =
  19. 19.95³ =
  20. 20.21³ =
  21. 21.55³ =
  22. 22.34³ =
  23. 23.98³ =
  24. 24.94³ =
  25. 25.32³ =
  26. 26.27³ =
  27. 27.41³ =
  28. 28.11³ =
  29. 29.56³ =
  30. 30.62³ =
  31. 31.94³ =
  32. 32.56³ =
  33. 33.29³ =
  34. 34.16³ =
  35. 35.36³ =
  36. 36.16³ =
  37. 37.13³ =
  38. 38.49³ =
  39. 39.11³ =
  40. 40.55³ =

Answer key

  1. 970299
  2. 29791
  3. 185193
  4. 5832
  5. 24389
  6. 4096
  7. 1331
  8. 704969
  9. 195112
  10. 592704
  11. 103823
  12. 46656
  13. 300763
  14. 29791
  15. 68921
  16. 421875
  17. 658503
  18. 50653
  19. 857375
  20. 9261
  21. 166375
  22. 39304
  23. 941192
  24. 830584
  25. 32768
  26. 19683
  27. 68921
  28. 1331
  29. 175616
  30. 238328
  31. 830584
  32. 175616
  33. 24389
  34. 4096
  35. 46656
  36. 4096
  37. 2197
  38. 117649
  39. 1331
  40. 166375

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