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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 426 · 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. 1.29³ =
  2. 2.71³ =
  3. 3.18³ =
  4. 4.54³ =
  5. 5.84³ =
  6. 6.55³ =
  7. 7.15³ =
  8. 8.51³ =
  9. 9.15³ =
  10. 10.65³ =
  11. 11.41³ =
  12. 12.11³ =
  13. 13.92³ =
  14. 14.58³ =
  15. 15.74³ =
  16. 16.37³ =
  17. 17.84³ =
  18. 18.75³ =
  19. 19.11³ =
  20. 20.82³ =
  21. 21.33³ =
  22. 22.27³ =
  23. 23.77³ =
  24. 24.21³ =
  25. 25.37³ =
  26. 26.81³ =
  27. 27.65³ =
  28. 28.76³ =
  29. 29.51³ =
  30. 30.81³ =
  31. 31.87³ =
  32. 32.31³ =
  33. 33.17³ =
  34. 34.41³ =
  35. 35.49³ =
  36. 36.38³ =
  37. 37.82³ =
  38. 38.75³ =
  39. 39.75³ =
  40. 40.59³ =

Answer key

  1. 24389
  2. 357911
  3. 5832
  4. 157464
  5. 592704
  6. 166375
  7. 3375
  8. 132651
  9. 3375
  10. 274625
  11. 68921
  12. 1331
  13. 778688
  14. 195112
  15. 405224
  16. 50653
  17. 592704
  18. 421875
  19. 1331
  20. 551368
  21. 35937
  22. 19683
  23. 456533
  24. 9261
  25. 50653
  26. 531441
  27. 274625
  28. 438976
  29. 132651
  30. 531441
  31. 658503
  32. 29791
  33. 4913
  34. 68921
  35. 117649
  36. 54872
  37. 551368
  38. 421875
  39. 421875
  40. 205379

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