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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 231 · 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. 1.94³ =
  2. 2.91³ =
  3. 3.24³ =
  4. 4.59³ =
  5. 5.21³ =
  6. 6.61³ =
  7. 7.23³ =
  8. 8.78³ =
  9. 9.74³ =
  10. 10.81³ =
  11. 11.52³ =
  12. 12.93³ =
  13. 13.56³ =
  14. 14.73³ =
  15. 15.85³ =
  16. 16.98³ =
  17. 17.45³ =
  18. 18.17³ =
  19. 19.92³ =
  20. 20.41³ =
  21. 21.76³ =
  22. 22.12³ =
  23. 23.17³ =
  24. 24.59³ =
  25. 25.31³ =
  26. 26.93³ =
  27. 27.92³ =
  28. 28.95³ =
  29. 29.49³ =
  30. 30.56³ =
  31. 31.24³ =
  32. 32.69³ =
  33. 33.88³ =
  34. 34.34³ =
  35. 35.23³ =
  36. 36.27³ =
  37. 37.49³ =
  38. 38.74³ =
  39. 39.75³ =
  40. 40.25³ =

Answer key

  1. 830584
  2. 753571
  3. 13824
  4. 205379
  5. 9261
  6. 226981
  7. 12167
  8. 474552
  9. 405224
  10. 531441
  11. 140608
  12. 804357
  13. 175616
  14. 389017
  15. 614125
  16. 941192
  17. 91125
  18. 4913
  19. 778688
  20. 68921
  21. 438976
  22. 1728
  23. 4913
  24. 205379
  25. 29791
  26. 804357
  27. 778688
  28. 857375
  29. 117649
  30. 175616
  31. 13824
  32. 328509
  33. 681472
  34. 39304
  35. 12167
  36. 19683
  37. 117649
  38. 405224
  39. 421875
  40. 15625

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