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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 780 · 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. 1.41³ =
  2. 2.54³ =
  3. 3.98³ =
  4. 4.31³ =
  5. 5.89³ =
  6. 6.68³ =
  7. 7.71³ =
  8. 8.75³ =
  9. 9.36³ =
  10. 10.52³ =
  11. 11.31³ =
  12. 12.94³ =
  13. 13.43³ =
  14. 14.66³ =
  15. 15.87³ =
  16. 16.22³ =
  17. 17.58³ =
  18. 18.59³ =
  19. 19.82³ =
  20. 20.94³ =
  21. 21.11³ =
  22. 22.13³ =
  23. 23.64³ =
  24. 24.44³ =
  25. 25.59³ =
  26. 26.36³ =
  27. 27.33³ =
  28. 28.12³ =
  29. 29.39³ =
  30. 30.85³ =
  31. 31.92³ =
  32. 32.65³ =
  33. 33.81³ =
  34. 34.35³ =
  35. 35.85³ =
  36. 36.11³ =
  37. 37.25³ =
  38. 38.52³ =
  39. 39.13³ =
  40. 40.46³ =

Answer key

  1. 68921
  2. 157464
  3. 941192
  4. 29791
  5. 704969
  6. 314432
  7. 357911
  8. 421875
  9. 46656
  10. 140608
  11. 29791
  12. 830584
  13. 79507
  14. 287496
  15. 658503
  16. 10648
  17. 195112
  18. 205379
  19. 551368
  20. 830584
  21. 1331
  22. 2197
  23. 262144
  24. 85184
  25. 205379
  26. 46656
  27. 35937
  28. 1728
  29. 59319
  30. 614125
  31. 778688
  32. 274625
  33. 531441
  34. 42875
  35. 614125
  36. 1331
  37. 15625
  38. 140608
  39. 2197
  40. 97336

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