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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 49 · 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. 2.91³ =
  3. 3.19³ =
  4. 4.38³ =
  5. 5.22³ =
  6. 6.48³ =
  7. 7.75³ =
  8. 8.21³ =
  9. 9.89³ =
  10. 10.91³ =
  11. 11.26³ =
  12. 12.75³ =
  13. 13.41³ =
  14. 14.13³ =
  15. 15.51³ =
  16. 16.96³ =
  17. 17.63³ =
  18. 18.43³ =
  19. 19.89³ =
  20. 20.86³ =
  21. 21.49³ =
  22. 22.68³ =
  23. 23.72³ =
  24. 24.39³ =
  25. 25.71³ =
  26. 26.56³ =
  27. 27.62³ =
  28. 28.14³ =
  29. 29.52³ =
  30. 30.21³ =
  31. 31.31³ =
  32. 32.11³ =
  33. 33.23³ =
  34. 34.81³ =
  35. 35.23³ =
  36. 36.11³ =
  37. 37.45³ =
  38. 38.14³ =
  39. 39.19³ =
  40. 40.89³ =

Answer key

  1. 29791
  2. 753571
  3. 6859
  4. 54872
  5. 10648
  6. 110592
  7. 421875
  8. 9261
  9. 704969
  10. 753571
  11. 17576
  12. 421875
  13. 68921
  14. 2197
  15. 132651
  16. 884736
  17. 250047
  18. 79507
  19. 704969
  20. 636056
  21. 117649
  22. 314432
  23. 373248
  24. 59319
  25. 357911
  26. 175616
  27. 238328
  28. 2744
  29. 140608
  30. 9261
  31. 29791
  32. 1331
  33. 12167
  34. 531441
  35. 12167
  36. 1331
  37. 91125
  38. 2744
  39. 6859
  40. 704969

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