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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 492 · 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. 1.61³ =
  2. 2.17³ =
  3. 3.57³ =
  4. 4.74³ =
  5. 5.45³ =
  6. 6.36³ =
  7. 7.22³ =
  8. 8.13³ =
  9. 9.76³ =
  10. 10.22³ =
  11. 11.21³ =
  12. 12.47³ =
  13. 13.71³ =
  14. 14.85³ =
  15. 15.31³ =
  16. 16.39³ =
  17. 17.81³ =
  18. 18.82³ =
  19. 19.38³ =
  20. 20.73³ =
  21. 21.95³ =
  22. 22.87³ =
  23. 23.13³ =
  24. 24.61³ =
  25. 25.76³ =
  26. 26.11³ =
  27. 27.87³ =
  28. 28.41³ =
  29. 29.51³ =
  30. 30.79³ =
  31. 31.48³ =
  32. 32.99³ =
  33. 33.36³ =
  34. 34.79³ =
  35. 35.54³ =
  36. 36.21³ =
  37. 37.97³ =
  38. 38.73³ =
  39. 39.32³ =
  40. 40.62³ =

Answer key

  1. 226981
  2. 4913
  3. 185193
  4. 405224
  5. 91125
  6. 46656
  7. 10648
  8. 2197
  9. 438976
  10. 10648
  11. 9261
  12. 103823
  13. 357911
  14. 614125
  15. 29791
  16. 59319
  17. 531441
  18. 551368
  19. 54872
  20. 389017
  21. 857375
  22. 658503
  23. 2197
  24. 226981
  25. 438976
  26. 1331
  27. 658503
  28. 68921
  29. 132651
  30. 493039
  31. 110592
  32. 970299
  33. 46656
  34. 493039
  35. 157464
  36. 9261
  37. 912673
  38. 389017
  39. 32768
  40. 238328

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