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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 69 · 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. 1.99³ =
  2. 2.42³ =
  3. 3.18³ =
  4. 4.78³ =
  5. 5.57³ =
  6. 6.65³ =
  7. 7.66³ =
  8. 8.97³ =
  9. 9.73³ =
  10. 10.55³ =
  11. 11.88³ =
  12. 12.45³ =
  13. 13.71³ =
  14. 14.91³ =
  15. 15.19³ =
  16. 16.75³ =
  17. 17.19³ =
  18. 18.19³ =
  19. 19.55³ =
  20. 20.31³ =
  21. 21.69³ =
  22. 22.61³ =
  23. 23.91³ =
  24. 24.88³ =
  25. 25.97³ =
  26. 26.28³ =
  27. 27.51³ =
  28. 28.48³ =
  29. 29.37³ =
  30. 30.31³ =
  31. 31.29³ =
  32. 32.99³ =
  33. 33.31³ =
  34. 34.29³ =
  35. 35.21³ =
  36. 36.23³ =
  37. 37.31³ =
  38. 38.13³ =
  39. 39.46³ =
  40. 40.52³ =

Answer key

  1. 970299
  2. 74088
  3. 5832
  4. 474552
  5. 185193
  6. 274625
  7. 287496
  8. 912673
  9. 389017
  10. 166375
  11. 681472
  12. 91125
  13. 357911
  14. 753571
  15. 6859
  16. 421875
  17. 6859
  18. 6859
  19. 166375
  20. 29791
  21. 328509
  22. 226981
  23. 753571
  24. 681472
  25. 912673
  26. 21952
  27. 132651
  28. 110592
  29. 50653
  30. 29791
  31. 24389
  32. 970299
  33. 29791
  34. 24389
  35. 9261
  36. 12167
  37. 29791
  38. 2197
  39. 97336
  40. 140608

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