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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 121 · 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. 1.81³ =
  2. 2.86³ =
  3. 3.32³ =
  4. 4.59³ =
  5. 5.17³ =
  6. 6.18³ =
  7. 7.19³ =
  8. 8.14³ =
  9. 9.15³ =
  10. 10.97³ =
  11. 11.15³ =
  12. 12.94³ =
  13. 13.45³ =
  14. 14.43³ =
  15. 15.99³ =
  16. 16.94³ =
  17. 17.12³ =
  18. 18.71³ =
  19. 19.42³ =
  20. 20.19³ =
  21. 21.33³ =
  22. 22.13³ =
  23. 23.13³ =
  24. 24.98³ =
  25. 25.34³ =
  26. 26.24³ =
  27. 27.61³ =
  28. 28.86³ =
  29. 29.51³ =
  30. 30.95³ =
  31. 31.79³ =
  32. 32.28³ =
  33. 33.72³ =
  34. 34.23³ =
  35. 35.76³ =
  36. 36.41³ =
  37. 37.29³ =
  38. 38.17³ =
  39. 39.41³ =
  40. 40.46³ =

Answer key

  1. 531441
  2. 636056
  3. 32768
  4. 205379
  5. 4913
  6. 5832
  7. 6859
  8. 2744
  9. 3375
  10. 912673
  11. 3375
  12. 830584
  13. 91125
  14. 79507
  15. 970299
  16. 830584
  17. 1728
  18. 357911
  19. 74088
  20. 6859
  21. 35937
  22. 2197
  23. 2197
  24. 941192
  25. 39304
  26. 13824
  27. 226981
  28. 636056
  29. 132651
  30. 857375
  31. 493039
  32. 21952
  33. 373248
  34. 12167
  35. 438976
  36. 68921
  37. 24389
  38. 4913
  39. 68921
  40. 97336

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