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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 561 · 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. 1.23³ =
  2. 2.21³ =
  3. 3.57³ =
  4. 4.37³ =
  5. 5.71³ =
  6. 6.21³ =
  7. 7.88³ =
  8. 8.36³ =
  9. 9.29³ =
  10. 10.75³ =
  11. 11.37³ =
  12. 12.68³ =
  13. 13.56³ =
  14. 14.61³ =
  15. 15.76³ =
  16. 16.37³ =
  17. 17.74³ =
  18. 18.15³ =
  19. 19.95³ =
  20. 20.21³ =
  21. 21.66³ =
  22. 22.45³ =
  23. 23.38³ =
  24. 24.54³ =
  25. 25.57³ =
  26. 26.22³ =
  27. 27.56³ =
  28. 28.22³ =
  29. 29.86³ =
  30. 30.73³ =
  31. 31.14³ =
  32. 32.25³ =
  33. 33.92³ =
  34. 34.46³ =
  35. 35.82³ =
  36. 36.85³ =
  37. 37.88³ =
  38. 38.21³ =
  39. 39.29³ =
  40. 40.98³ =

Answer key

  1. 12167
  2. 9261
  3. 185193
  4. 50653
  5. 357911
  6. 9261
  7. 681472
  8. 46656
  9. 24389
  10. 421875
  11. 50653
  12. 314432
  13. 175616
  14. 226981
  15. 438976
  16. 50653
  17. 405224
  18. 3375
  19. 857375
  20. 9261
  21. 287496
  22. 91125
  23. 54872
  24. 157464
  25. 185193
  26. 10648
  27. 175616
  28. 10648
  29. 636056
  30. 389017
  31. 2744
  32. 15625
  33. 778688
  34. 97336
  35. 551368
  36. 614125
  37. 681472
  38. 9261
  39. 24389
  40. 941192

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