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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 924 · 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. 1.82³ =
  2. 2.51³ =
  3. 3.11³ =
  4. 4.42³ =
  5. 5.33³ =
  6. 6.72³ =
  7. 7.27³ =
  8. 8.72³ =
  9. 9.45³ =
  10. 10.25³ =
  11. 11.14³ =
  12. 12.76³ =
  13. 13.37³ =
  14. 14.71³ =
  15. 15.36³ =
  16. 16.77³ =
  17. 17.25³ =
  18. 18.45³ =
  19. 19.34³ =
  20. 20.47³ =
  21. 21.98³ =
  22. 22.53³ =
  23. 23.19³ =
  24. 24.13³ =
  25. 25.29³ =
  26. 26.18³ =
  27. 27.64³ =
  28. 28.91³ =
  29. 29.26³ =
  30. 30.34³ =
  31. 31.75³ =
  32. 32.79³ =
  33. 33.41³ =
  34. 34.71³ =
  35. 35.81³ =
  36. 36.45³ =
  37. 37.65³ =
  38. 38.77³ =
  39. 39.43³ =
  40. 40.32³ =

Answer key

  1. 551368
  2. 132651
  3. 1331
  4. 74088
  5. 35937
  6. 373248
  7. 19683
  8. 373248
  9. 91125
  10. 15625
  11. 2744
  12. 438976
  13. 50653
  14. 357911
  15. 46656
  16. 456533
  17. 15625
  18. 91125
  19. 39304
  20. 103823
  21. 941192
  22. 148877
  23. 6859
  24. 2197
  25. 24389
  26. 5832
  27. 262144
  28. 753571
  29. 17576
  30. 39304
  31. 421875
  32. 493039
  33. 68921
  34. 357911
  35. 531441
  36. 91125
  37. 274625
  38. 456533
  39. 79507
  40. 32768

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