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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 385 · 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. 1.49³ =
  2. 2.43³ =
  3. 3.38³ =
  4. 4.22³ =
  5. 5.61³ =
  6. 6.62³ =
  7. 7.22³ =
  8. 8.32³ =
  9. 9.87³ =
  10. 10.63³ =
  11. 11.49³ =
  12. 12.19³ =
  13. 13.93³ =
  14. 14.15³ =
  15. 15.91³ =
  16. 16.99³ =
  17. 17.61³ =
  18. 18.74³ =
  19. 19.87³ =
  20. 20.74³ =
  21. 21.29³ =
  22. 22.88³ =
  23. 23.31³ =
  24. 24.35³ =
  25. 25.12³ =
  26. 26.72³ =
  27. 27.63³ =
  28. 28.25³ =
  29. 29.86³ =
  30. 30.69³ =
  31. 31.21³ =
  32. 32.81³ =
  33. 33.11³ =
  34. 34.99³ =
  35. 35.55³ =
  36. 36.14³ =
  37. 37.71³ =
  38. 38.74³ =
  39. 39.64³ =
  40. 40.64³ =

Answer key

  1. 117649
  2. 79507
  3. 54872
  4. 10648
  5. 226981
  6. 238328
  7. 10648
  8. 32768
  9. 658503
  10. 250047
  11. 117649
  12. 6859
  13. 804357
  14. 3375
  15. 753571
  16. 970299
  17. 226981
  18. 405224
  19. 658503
  20. 405224
  21. 24389
  22. 681472
  23. 29791
  24. 42875
  25. 1728
  26. 373248
  27. 250047
  28. 15625
  29. 636056
  30. 328509
  31. 9261
  32. 531441
  33. 1331
  34. 970299
  35. 166375
  36. 2744
  37. 357911
  38. 405224
  39. 262144
  40. 262144

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