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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 454 · 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. 1.77³ =
  2. 2.92³ =
  3. 3.15³ =
  4. 4.41³ =
  5. 5.72³ =
  6. 6.63³ =
  7. 7.79³ =
  8. 8.34³ =
  9. 9.81³ =
  10. 10.68³ =
  11. 11.82³ =
  12. 12.13³ =
  13. 13.31³ =
  14. 14.15³ =
  15. 15.95³ =
  16. 16.87³ =
  17. 17.37³ =
  18. 18.17³ =
  19. 19.64³ =
  20. 20.44³ =
  21. 21.88³ =
  22. 22.64³ =
  23. 23.17³ =
  24. 24.64³ =
  25. 25.33³ =
  26. 26.22³ =
  27. 27.91³ =
  28. 28.52³ =
  29. 29.33³ =
  30. 30.82³ =
  31. 31.68³ =
  32. 32.79³ =
  33. 33.11³ =
  34. 34.92³ =
  35. 35.99³ =
  36. 36.25³ =
  37. 37.23³ =
  38. 38.66³ =
  39. 39.31³ =
  40. 40.64³ =

Answer key

  1. 456533
  2. 778688
  3. 3375
  4. 68921
  5. 373248
  6. 250047
  7. 493039
  8. 39304
  9. 531441
  10. 314432
  11. 551368
  12. 2197
  13. 29791
  14. 3375
  15. 857375
  16. 658503
  17. 50653
  18. 4913
  19. 262144
  20. 85184
  21. 681472
  22. 262144
  23. 4913
  24. 262144
  25. 35937
  26. 10648
  27. 753571
  28. 140608
  29. 35937
  30. 551368
  31. 314432
  32. 493039
  33. 1331
  34. 778688
  35. 970299
  36. 15625
  37. 12167
  38. 287496
  39. 29791
  40. 262144

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