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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 912 · 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. 1.11³ =
  2. 2.89³ =
  3. 3.31³ =
  4. 4.18³ =
  5. 5.78³ =
  6. 6.58³ =
  7. 7.32³ =
  8. 8.37³ =
  9. 9.61³ =
  10. 10.68³ =
  11. 11.34³ =
  12. 12.34³ =
  13. 13.99³ =
  14. 14.55³ =
  15. 15.47³ =
  16. 16.68³ =
  17. 17.74³ =
  18. 18.18³ =
  19. 19.85³ =
  20. 20.18³ =
  21. 21.12³ =
  22. 22.32³ =
  23. 23.58³ =
  24. 24.51³ =
  25. 25.28³ =
  26. 26.62³ =
  27. 27.25³ =
  28. 28.21³ =
  29. 29.57³ =
  30. 30.51³ =
  31. 31.18³ =
  32. 32.45³ =
  33. 33.58³ =
  34. 34.69³ =
  35. 35.67³ =
  36. 36.37³ =
  37. 37.48³ =
  38. 38.43³ =
  39. 39.69³ =
  40. 40.66³ =

Answer key

  1. 1331
  2. 704969
  3. 29791
  4. 5832
  5. 474552
  6. 195112
  7. 32768
  8. 50653
  9. 226981
  10. 314432
  11. 39304
  12. 39304
  13. 970299
  14. 166375
  15. 103823
  16. 314432
  17. 405224
  18. 5832
  19. 614125
  20. 5832
  21. 1728
  22. 32768
  23. 195112
  24. 132651
  25. 21952
  26. 238328
  27. 15625
  28. 9261
  29. 185193
  30. 132651
  31. 5832
  32. 91125
  33. 195112
  34. 328509
  35. 300763
  36. 50653
  37. 110592
  38. 79507
  39. 328509
  40. 287496

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