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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 670 · 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. 2.45³ =
  3. 3.74³ =
  4. 4.43³ =
  5. 5.24³ =
  6. 6.49³ =
  7. 7.96³ =
  8. 8.79³ =
  9. 9.26³ =
  10. 10.34³ =
  11. 11.63³ =
  12. 12.14³ =
  13. 13.21³ =
  14. 14.19³ =
  15. 15.98³ =
  16. 16.88³ =
  17. 17.67³ =
  18. 18.87³ =
  19. 19.11³ =
  20. 20.82³ =
  21. 21.64³ =
  22. 22.16³ =
  23. 23.29³ =
  24. 24.82³ =
  25. 25.49³ =
  26. 26.87³ =
  27. 27.91³ =
  28. 28.78³ =
  29. 29.28³ =
  30. 30.89³ =
  31. 31.36³ =
  32. 32.97³ =
  33. 33.17³ =
  34. 34.21³ =
  35. 35.18³ =
  36. 36.67³ =
  37. 37.81³ =
  38. 38.44³ =
  39. 39.41³ =
  40. 40.81³ =

Answer key

  1. 117649
  2. 91125
  3. 405224
  4. 79507
  5. 13824
  6. 117649
  7. 884736
  8. 493039
  9. 17576
  10. 39304
  11. 250047
  12. 2744
  13. 9261
  14. 6859
  15. 941192
  16. 681472
  17. 300763
  18. 658503
  19. 1331
  20. 551368
  21. 262144
  22. 4096
  23. 24389
  24. 551368
  25. 117649
  26. 658503
  27. 753571
  28. 474552
  29. 21952
  30. 704969
  31. 46656
  32. 912673
  33. 4913
  34. 9261
  35. 5832
  36. 300763
  37. 531441
  38. 85184
  39. 68921
  40. 531441

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