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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 478 · 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. 1.47³ =
  2. 2.52³ =
  3. 3.24³ =
  4. 4.31³ =
  5. 5.21³ =
  6. 6.13³ =
  7. 7.94³ =
  8. 8.66³ =
  9. 9.51³ =
  10. 10.64³ =
  11. 11.63³ =
  12. 12.13³ =
  13. 13.54³ =
  14. 14.48³ =
  15. 15.78³ =
  16. 16.72³ =
  17. 17.35³ =
  18. 18.72³ =
  19. 19.56³ =
  20. 20.73³ =
  21. 21.48³ =
  22. 22.15³ =
  23. 23.27³ =
  24. 24.51³ =
  25. 25.96³ =
  26. 26.51³ =
  27. 27.45³ =
  28. 28.87³ =
  29. 29.67³ =
  30. 30.28³ =
  31. 31.15³ =
  32. 32.71³ =
  33. 33.69³ =
  34. 34.69³ =
  35. 35.25³ =
  36. 36.53³ =
  37. 37.74³ =
  38. 38.94³ =
  39. 39.33³ =
  40. 40.94³ =

Answer key

  1. 103823
  2. 140608
  3. 13824
  4. 29791
  5. 9261
  6. 2197
  7. 830584
  8. 287496
  9. 132651
  10. 262144
  11. 250047
  12. 2197
  13. 157464
  14. 110592
  15. 474552
  16. 373248
  17. 42875
  18. 373248
  19. 175616
  20. 389017
  21. 110592
  22. 3375
  23. 19683
  24. 132651
  25. 884736
  26. 132651
  27. 91125
  28. 658503
  29. 300763
  30. 21952
  31. 3375
  32. 357911
  33. 328509
  34. 328509
  35. 15625
  36. 148877
  37. 405224
  38. 830584
  39. 35937
  40. 830584

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