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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 788 · 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. 2.95³ =
  3. 3.78³ =
  4. 4.47³ =
  5. 5.89³ =
  6. 6.25³ =
  7. 7.88³ =
  8. 8.51³ =
  9. 9.19³ =
  10. 10.37³ =
  11. 11.42³ =
  12. 12.26³ =
  13. 13.66³ =
  14. 14.21³ =
  15. 15.33³ =
  16. 16.79³ =
  17. 17.25³ =
  18. 18.14³ =
  19. 19.62³ =
  20. 20.27³ =
  21. 21.65³ =
  22. 22.18³ =
  23. 23.17³ =
  24. 24.59³ =
  25. 25.78³ =
  26. 26.75³ =
  27. 27.33³ =
  28. 28.88³ =
  29. 29.71³ =
  30. 30.55³ =
  31. 31.64³ =
  32. 32.11³ =
  33. 33.92³ =
  34. 34.91³ =
  35. 35.68³ =
  36. 36.65³ =
  37. 37.96³ =
  38. 38.92³ =
  39. 39.21³ =
  40. 40.64³ =

Answer key

  1. 29791
  2. 857375
  3. 474552
  4. 103823
  5. 704969
  6. 15625
  7. 681472
  8. 132651
  9. 6859
  10. 50653
  11. 74088
  12. 17576
  13. 287496
  14. 9261
  15. 35937
  16. 493039
  17. 15625
  18. 2744
  19. 238328
  20. 19683
  21. 274625
  22. 5832
  23. 4913
  24. 205379
  25. 474552
  26. 421875
  27. 35937
  28. 681472
  29. 357911
  30. 166375
  31. 262144
  32. 1331
  33. 778688
  34. 753571
  35. 314432
  36. 274625
  37. 884736
  38. 778688
  39. 9261
  40. 262144

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