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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 407 · 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. 1.31³ =
  2. 2.18³ =
  3. 3.23³ =
  4. 4.83³ =
  5. 5.88³ =
  6. 6.94³ =
  7. 7.25³ =
  8. 8.64³ =
  9. 9.18³ =
  10. 10.61³ =
  11. 11.58³ =
  12. 12.84³ =
  13. 13.11³ =
  14. 14.11³ =
  15. 15.56³ =
  16. 16.92³ =
  17. 17.83³ =
  18. 18.82³ =
  19. 19.31³ =
  20. 20.47³ =
  21. 21.24³ =
  22. 22.26³ =
  23. 23.86³ =
  24. 24.63³ =
  25. 25.29³ =
  26. 26.99³ =
  27. 27.57³ =
  28. 28.21³ =
  29. 29.97³ =
  30. 30.95³ =
  31. 31.24³ =
  32. 32.68³ =
  33. 33.61³ =
  34. 34.41³ =
  35. 35.12³ =
  36. 36.87³ =
  37. 37.12³ =
  38. 38.95³ =
  39. 39.28³ =
  40. 40.24³ =

Answer key

  1. 29791
  2. 5832
  3. 12167
  4. 571787
  5. 681472
  6. 830584
  7. 15625
  8. 262144
  9. 5832
  10. 226981
  11. 195112
  12. 592704
  13. 1331
  14. 1331
  15. 175616
  16. 778688
  17. 571787
  18. 551368
  19. 29791
  20. 103823
  21. 13824
  22. 17576
  23. 636056
  24. 250047
  25. 24389
  26. 970299
  27. 185193
  28. 9261
  29. 912673
  30. 857375
  31. 13824
  32. 314432
  33. 226981
  34. 68921
  35. 1728
  36. 658503
  37. 1728
  38. 857375
  39. 21952
  40. 13824

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