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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 15 · 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. 2.12³ =
  3. 3.61³ =
  4. 4.63³ =
  5. 5.58³ =
  6. 6.84³ =
  7. 7.52³ =
  8. 8.96³ =
  9. 9.51³ =
  10. 10.19³ =
  11. 11.39³ =
  12. 12.19³ =
  13. 13.29³ =
  14. 14.64³ =
  15. 15.24³ =
  16. 16.22³ =
  17. 17.81³ =
  18. 18.12³ =
  19. 19.63³ =
  20. 20.49³ =
  21. 21.22³ =
  22. 22.24³ =
  23. 23.84³ =
  24. 24.91³ =
  25. 25.17³ =
  26. 26.15³ =
  27. 27.85³ =
  28. 28.54³ =
  29. 29.71³ =
  30. 30.33³ =
  31. 31.68³ =
  32. 32.99³ =
  33. 33.43³ =
  34. 34.87³ =
  35. 35.69³ =
  36. 36.93³ =
  37. 37.16³ =
  38. 38.61³ =
  39. 39.24³ =
  40. 40.42³ =

Answer key

  1. 117649
  2. 1728
  3. 226981
  4. 250047
  5. 195112
  6. 592704
  7. 140608
  8. 884736
  9. 132651
  10. 6859
  11. 59319
  12. 6859
  13. 24389
  14. 262144
  15. 13824
  16. 10648
  17. 531441
  18. 1728
  19. 250047
  20. 117649
  21. 10648
  22. 13824
  23. 592704
  24. 753571
  25. 4913
  26. 3375
  27. 614125
  28. 157464
  29. 357911
  30. 35937
  31. 314432
  32. 970299
  33. 79507
  34. 658503
  35. 328509
  36. 804357
  37. 4096
  38. 226981
  39. 13824
  40. 74088

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