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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 251 · 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. 1.25³ =
  2. 2.79³ =
  3. 3.16³ =
  4. 4.82³ =
  5. 5.69³ =
  6. 6.85³ =
  7. 7.25³ =
  8. 8.96³ =
  9. 9.22³ =
  10. 10.51³ =
  11. 11.49³ =
  12. 12.64³ =
  13. 13.63³ =
  14. 14.87³ =
  15. 15.72³ =
  16. 16.66³ =
  17. 17.12³ =
  18. 18.69³ =
  19. 19.11³ =
  20. 20.47³ =
  21. 21.44³ =
  22. 22.12³ =
  23. 23.23³ =
  24. 24.98³ =
  25. 25.81³ =
  26. 26.79³ =
  27. 27.54³ =
  28. 28.14³ =
  29. 29.76³ =
  30. 30.76³ =
  31. 31.94³ =
  32. 32.54³ =
  33. 33.74³ =
  34. 34.35³ =
  35. 35.52³ =
  36. 36.37³ =
  37. 37.16³ =
  38. 38.48³ =
  39. 39.79³ =
  40. 40.59³ =

Answer key

  1. 15625
  2. 493039
  3. 4096
  4. 551368
  5. 328509
  6. 614125
  7. 15625
  8. 884736
  9. 10648
  10. 132651
  11. 117649
  12. 262144
  13. 250047
  14. 658503
  15. 373248
  16. 287496
  17. 1728
  18. 328509
  19. 1331
  20. 103823
  21. 85184
  22. 1728
  23. 12167
  24. 941192
  25. 531441
  26. 493039
  27. 157464
  28. 2744
  29. 438976
  30. 438976
  31. 830584
  32. 157464
  33. 405224
  34. 42875
  35. 140608
  36. 50653
  37. 4096
  38. 110592
  39. 493039
  40. 205379

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