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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 999 · 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. 1.39³ =
  2. 2.41³ =
  3. 3.53³ =
  4. 4.11³ =
  5. 5.86³ =
  6. 6.99³ =
  7. 7.81³ =
  8. 8.88³ =
  9. 9.69³ =
  10. 10.31³ =
  11. 11.24³ =
  12. 12.75³ =
  13. 13.43³ =
  14. 14.51³ =
  15. 15.18³ =
  16. 16.76³ =
  17. 17.82³ =
  18. 18.81³ =
  19. 19.91³ =
  20. 20.34³ =
  21. 21.78³ =
  22. 22.38³ =
  23. 23.49³ =
  24. 24.74³ =
  25. 25.91³ =
  26. 26.87³ =
  27. 27.94³ =
  28. 28.94³ =
  29. 29.31³ =
  30. 30.81³ =
  31. 31.92³ =
  32. 32.32³ =
  33. 33.93³ =
  34. 34.94³ =
  35. 35.28³ =
  36. 36.72³ =
  37. 37.15³ =
  38. 38.55³ =
  39. 39.11³ =
  40. 40.44³ =

Answer key

  1. 59319
  2. 68921
  3. 148877
  4. 1331
  5. 636056
  6. 970299
  7. 531441
  8. 681472
  9. 328509
  10. 29791
  11. 13824
  12. 421875
  13. 79507
  14. 132651
  15. 5832
  16. 438976
  17. 551368
  18. 531441
  19. 753571
  20. 39304
  21. 474552
  22. 54872
  23. 117649
  24. 405224
  25. 753571
  26. 658503
  27. 830584
  28. 830584
  29. 29791
  30. 531441
  31. 778688
  32. 32768
  33. 804357
  34. 830584
  35. 21952
  36. 373248
  37. 3375
  38. 166375
  39. 1331
  40. 85184

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