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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 440 · 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. 1.31³ =
  2. 2.51³ =
  3. 3.57³ =
  4. 4.43³ =
  5. 5.47³ =
  6. 6.79³ =
  7. 7.79³ =
  8. 8.57³ =
  9. 9.73³ =
  10. 10.17³ =
  11. 11.94³ =
  12. 12.15³ =
  13. 13.93³ =
  14. 14.48³ =
  15. 15.21³ =
  16. 16.98³ =
  17. 17.88³ =
  18. 18.95³ =
  19. 19.95³ =
  20. 20.11³ =
  21. 21.18³ =
  22. 22.43³ =
  23. 23.21³ =
  24. 24.86³ =
  25. 25.71³ =
  26. 26.24³ =
  27. 27.71³ =
  28. 28.41³ =
  29. 29.29³ =
  30. 30.39³ =
  31. 31.17³ =
  32. 32.65³ =
  33. 33.71³ =
  34. 34.73³ =
  35. 35.71³ =
  36. 36.69³ =
  37. 37.19³ =
  38. 38.31³ =
  39. 39.89³ =
  40. 40.26³ =

Answer key

  1. 29791
  2. 132651
  3. 185193
  4. 79507
  5. 103823
  6. 493039
  7. 493039
  8. 185193
  9. 389017
  10. 4913
  11. 830584
  12. 3375
  13. 804357
  14. 110592
  15. 9261
  16. 941192
  17. 681472
  18. 857375
  19. 857375
  20. 1331
  21. 5832
  22. 79507
  23. 9261
  24. 636056
  25. 357911
  26. 13824
  27. 357911
  28. 68921
  29. 24389
  30. 59319
  31. 4913
  32. 274625
  33. 357911
  34. 389017
  35. 357911
  36. 328509
  37. 6859
  38. 29791
  39. 704969
  40. 17576

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