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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 616 · 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. 1.61³ =
  2. 2.16³ =
  3. 3.35³ =
  4. 4.24³ =
  5. 5.36³ =
  6. 6.63³ =
  7. 7.46³ =
  8. 8.31³ =
  9. 9.81³ =
  10. 10.65³ =
  11. 11.52³ =
  12. 12.67³ =
  13. 13.33³ =
  14. 14.19³ =
  15. 15.15³ =
  16. 16.21³ =
  17. 17.18³ =
  18. 18.55³ =
  19. 19.88³ =
  20. 20.91³ =
  21. 21.23³ =
  22. 22.61³ =
  23. 23.64³ =
  24. 24.58³ =
  25. 25.49³ =
  26. 26.76³ =
  27. 27.78³ =
  28. 28.82³ =
  29. 29.36³ =
  30. 30.23³ =
  31. 31.56³ =
  32. 32.33³ =
  33. 33.66³ =
  34. 34.99³ =
  35. 35.78³ =
  36. 36.71³ =
  37. 37.31³ =
  38. 38.41³ =
  39. 39.48³ =
  40. 40.68³ =

Answer key

  1. 226981
  2. 4096
  3. 42875
  4. 13824
  5. 46656
  6. 250047
  7. 97336
  8. 29791
  9. 531441
  10. 274625
  11. 140608
  12. 300763
  13. 35937
  14. 6859
  15. 3375
  16. 9261
  17. 5832
  18. 166375
  19. 681472
  20. 753571
  21. 12167
  22. 226981
  23. 262144
  24. 195112
  25. 117649
  26. 438976
  27. 474552
  28. 551368
  29. 46656
  30. 12167
  31. 175616
  32. 35937
  33. 287496
  34. 970299
  35. 474552
  36. 357911
  37. 29791
  38. 68921
  39. 110592
  40. 314432

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