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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 751 · 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. 1.84³ =
  2. 2.81³ =
  3. 3.72³ =
  4. 4.89³ =
  5. 5.26³ =
  6. 6.53³ =
  7. 7.87³ =
  8. 8.65³ =
  9. 9.86³ =
  10. 10.22³ =
  11. 11.73³ =
  12. 12.67³ =
  13. 13.75³ =
  14. 14.25³ =
  15. 15.43³ =
  16. 16.62³ =
  17. 17.81³ =
  18. 18.25³ =
  19. 19.78³ =
  20. 20.81³ =
  21. 21.16³ =
  22. 22.17³ =
  23. 23.67³ =
  24. 24.14³ =
  25. 25.14³ =
  26. 26.51³ =
  27. 27.94³ =
  28. 28.95³ =
  29. 29.19³ =
  30. 30.71³ =
  31. 31.21³ =
  32. 32.89³ =
  33. 33.36³ =
  34. 34.31³ =
  35. 35.38³ =
  36. 36.35³ =
  37. 37.21³ =
  38. 38.46³ =
  39. 39.81³ =
  40. 40.98³ =

Answer key

  1. 592704
  2. 531441
  3. 373248
  4. 704969
  5. 17576
  6. 148877
  7. 658503
  8. 274625
  9. 636056
  10. 10648
  11. 389017
  12. 300763
  13. 421875
  14. 15625
  15. 79507
  16. 238328
  17. 531441
  18. 15625
  19. 474552
  20. 531441
  21. 4096
  22. 4913
  23. 300763
  24. 2744
  25. 2744
  26. 132651
  27. 830584
  28. 857375
  29. 6859
  30. 357911
  31. 9261
  32. 704969
  33. 46656
  34. 29791
  35. 54872
  36. 42875
  37. 9261
  38. 97336
  39. 531441
  40. 941192

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