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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 901 · 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. 1.81³ =
  2. 2.51³ =
  3. 3.37³ =
  4. 4.94³ =
  5. 5.47³ =
  6. 6.78³ =
  7. 7.71³ =
  8. 8.85³ =
  9. 9.76³ =
  10. 10.18³ =
  11. 11.26³ =
  12. 12.96³ =
  13. 13.49³ =
  14. 14.18³ =
  15. 15.92³ =
  16. 16.18³ =
  17. 17.17³ =
  18. 18.25³ =
  19. 19.14³ =
  20. 20.11³ =
  21. 21.82³ =
  22. 22.94³ =
  23. 23.81³ =
  24. 24.36³ =
  25. 25.34³ =
  26. 26.57³ =
  27. 27.71³ =
  28. 28.87³ =
  29. 29.48³ =
  30. 30.75³ =
  31. 31.58³ =
  32. 32.13³ =
  33. 33.25³ =
  34. 34.35³ =
  35. 35.29³ =
  36. 36.77³ =
  37. 37.37³ =
  38. 38.95³ =
  39. 39.43³ =
  40. 40.29³ =

Answer key

  1. 531441
  2. 132651
  3. 50653
  4. 830584
  5. 103823
  6. 474552
  7. 357911
  8. 614125
  9. 438976
  10. 5832
  11. 17576
  12. 884736
  13. 117649
  14. 5832
  15. 778688
  16. 5832
  17. 4913
  18. 15625
  19. 2744
  20. 1331
  21. 551368
  22. 830584
  23. 531441
  24. 46656
  25. 39304
  26. 185193
  27. 357911
  28. 658503
  29. 110592
  30. 421875
  31. 195112
  32. 2197
  33. 15625
  34. 42875
  35. 24389
  36. 456533
  37. 50653
  38. 857375
  39. 79507
  40. 24389

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