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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 985 · 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. 1.64³ =
  2. 2.14³ =
  3. 3.94³ =
  4. 4.67³ =
  5. 5.92³ =
  6. 6.72³ =
  7. 7.81³ =
  8. 8.71³ =
  9. 9.12³ =
  10. 10.86³ =
  11. 11.36³ =
  12. 12.51³ =
  13. 13.54³ =
  14. 14.67³ =
  15. 15.65³ =
  16. 16.82³ =
  17. 17.38³ =
  18. 18.28³ =
  19. 19.28³ =
  20. 20.13³ =
  21. 21.95³ =
  22. 22.36³ =
  23. 23.81³ =
  24. 24.22³ =
  25. 25.27³ =
  26. 26.73³ =
  27. 27.36³ =
  28. 28.59³ =
  29. 29.46³ =
  30. 30.95³ =
  31. 31.97³ =
  32. 32.62³ =
  33. 33.39³ =
  34. 34.55³ =
  35. 35.74³ =
  36. 36.77³ =
  37. 37.25³ =
  38. 38.16³ =
  39. 39.27³ =
  40. 40.41³ =

Answer key

  1. 262144
  2. 2744
  3. 830584
  4. 300763
  5. 778688
  6. 373248
  7. 531441
  8. 357911
  9. 1728
  10. 636056
  11. 46656
  12. 132651
  13. 157464
  14. 300763
  15. 274625
  16. 551368
  17. 54872
  18. 21952
  19. 21952
  20. 2197
  21. 857375
  22. 46656
  23. 531441
  24. 10648
  25. 19683
  26. 389017
  27. 46656
  28. 205379
  29. 97336
  30. 857375
  31. 912673
  32. 238328
  33. 59319
  34. 166375
  35. 405224
  36. 456533
  37. 15625
  38. 4096
  39. 19683
  40. 68921

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