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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 679 · 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. 1.51³ =
  2. 2.98³ =
  3. 3.47³ =
  4. 4.68³ =
  5. 5.56³ =
  6. 6.72³ =
  7. 7.79³ =
  8. 8.11³ =
  9. 9.71³ =
  10. 10.61³ =
  11. 11.81³ =
  12. 12.83³ =
  13. 13.25³ =
  14. 14.35³ =
  15. 15.33³ =
  16. 16.26³ =
  17. 17.62³ =
  18. 18.22³ =
  19. 19.43³ =
  20. 20.16³ =
  21. 21.47³ =
  22. 22.88³ =
  23. 23.51³ =
  24. 24.95³ =
  25. 25.96³ =
  26. 26.84³ =
  27. 27.44³ =
  28. 28.16³ =
  29. 29.57³ =
  30. 30.97³ =
  31. 31.47³ =
  32. 32.31³ =
  33. 33.81³ =
  34. 34.57³ =
  35. 35.96³ =
  36. 36.93³ =
  37. 37.23³ =
  38. 38.48³ =
  39. 39.26³ =
  40. 40.74³ =

Answer key

  1. 132651
  2. 941192
  3. 103823
  4. 314432
  5. 175616
  6. 373248
  7. 493039
  8. 1331
  9. 357911
  10. 226981
  11. 531441
  12. 571787
  13. 15625
  14. 42875
  15. 35937
  16. 17576
  17. 238328
  18. 10648
  19. 79507
  20. 4096
  21. 103823
  22. 681472
  23. 132651
  24. 857375
  25. 884736
  26. 592704
  27. 85184
  28. 4096
  29. 185193
  30. 912673
  31. 103823
  32. 29791
  33. 531441
  34. 185193
  35. 884736
  36. 804357
  37. 12167
  38. 110592
  39. 17576
  40. 405224

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