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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 219 · 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. 1.97³ =
  2. 2.81³ =
  3. 3.78³ =
  4. 4.99³ =
  5. 5.92³ =
  6. 6.96³ =
  7. 7.46³ =
  8. 8.81³ =
  9. 9.75³ =
  10. 10.11³ =
  11. 11.22³ =
  12. 12.43³ =
  13. 13.77³ =
  14. 14.22³ =
  15. 15.25³ =
  16. 16.71³ =
  17. 17.71³ =
  18. 18.33³ =
  19. 19.44³ =
  20. 20.19³ =
  21. 21.21³ =
  22. 22.71³ =
  23. 23.35³ =
  24. 24.64³ =
  25. 25.24³ =
  26. 26.11³ =
  27. 27.71³ =
  28. 28.76³ =
  29. 29.34³ =
  30. 30.49³ =
  31. 31.25³ =
  32. 32.96³ =
  33. 33.78³ =
  34. 34.48³ =
  35. 35.62³ =
  36. 36.46³ =
  37. 37.45³ =
  38. 38.73³ =
  39. 39.72³ =
  40. 40.89³ =

Answer key

  1. 912673
  2. 531441
  3. 474552
  4. 970299
  5. 778688
  6. 884736
  7. 97336
  8. 531441
  9. 421875
  10. 1331
  11. 10648
  12. 79507
  13. 456533
  14. 10648
  15. 15625
  16. 357911
  17. 357911
  18. 35937
  19. 85184
  20. 6859
  21. 9261
  22. 357911
  23. 42875
  24. 262144
  25. 13824
  26. 1331
  27. 357911
  28. 438976
  29. 39304
  30. 117649
  31. 15625
  32. 884736
  33. 474552
  34. 110592
  35. 238328
  36. 97336
  37. 91125
  38. 389017
  39. 373248
  40. 704969

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