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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 770 · 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. 1.31³ =
  2. 2.92³ =
  3. 3.59³ =
  4. 4.26³ =
  5. 5.48³ =
  6. 6.81³ =
  7. 7.19³ =
  8. 8.41³ =
  9. 9.17³ =
  10. 10.31³ =
  11. 11.94³ =
  12. 12.64³ =
  13. 13.14³ =
  14. 14.21³ =
  15. 15.65³ =
  16. 16.14³ =
  17. 17.94³ =
  18. 18.62³ =
  19. 19.62³ =
  20. 20.11³ =
  21. 21.61³ =
  22. 22.99³ =
  23. 23.14³ =
  24. 24.34³ =
  25. 25.67³ =
  26. 26.21³ =
  27. 27.21³ =
  28. 28.24³ =
  29. 29.13³ =
  30. 30.96³ =
  31. 31.64³ =
  32. 32.96³ =
  33. 33.27³ =
  34. 34.52³ =
  35. 35.79³ =
  36. 36.43³ =
  37. 37.11³ =
  38. 38.77³ =
  39. 39.17³ =
  40. 40.16³ =

Answer key

  1. 29791
  2. 778688
  3. 205379
  4. 17576
  5. 110592
  6. 531441
  7. 6859
  8. 68921
  9. 4913
  10. 29791
  11. 830584
  12. 262144
  13. 2744
  14. 9261
  15. 274625
  16. 2744
  17. 830584
  18. 238328
  19. 238328
  20. 1331
  21. 226981
  22. 970299
  23. 2744
  24. 39304
  25. 300763
  26. 9261
  27. 9261
  28. 13824
  29. 2197
  30. 884736
  31. 262144
  32. 884736
  33. 19683
  34. 140608
  35. 493039
  36. 79507
  37. 1331
  38. 456533
  39. 4913
  40. 4096

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