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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 387 · 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. 1.49³ =
  2. 2.43³ =
  3. 3.76³ =
  4. 4.15³ =
  5. 5.74³ =
  6. 6.71³ =
  7. 7.48³ =
  8. 8.25³ =
  9. 9.13³ =
  10. 10.11³ =
  11. 11.18³ =
  12. 12.89³ =
  13. 13.31³ =
  14. 14.92³ =
  15. 15.57³ =
  16. 16.31³ =
  17. 17.99³ =
  18. 18.25³ =
  19. 19.56³ =
  20. 20.83³ =
  21. 21.61³ =
  22. 22.55³ =
  23. 23.43³ =
  24. 24.33³ =
  25. 25.26³ =
  26. 26.48³ =
  27. 27.47³ =
  28. 28.36³ =
  29. 29.66³ =
  30. 30.49³ =
  31. 31.38³ =
  32. 32.58³ =
  33. 33.72³ =
  34. 34.93³ =
  35. 35.58³ =
  36. 36.97³ =
  37. 37.15³ =
  38. 38.45³ =
  39. 39.64³ =
  40. 40.99³ =

Answer key

  1. 117649
  2. 79507
  3. 438976
  4. 3375
  5. 405224
  6. 357911
  7. 110592
  8. 15625
  9. 2197
  10. 1331
  11. 5832
  12. 704969
  13. 29791
  14. 778688
  15. 185193
  16. 29791
  17. 970299
  18. 15625
  19. 175616
  20. 571787
  21. 226981
  22. 166375
  23. 79507
  24. 35937
  25. 17576
  26. 110592
  27. 103823
  28. 46656
  29. 287496
  30. 117649
  31. 54872
  32. 195112
  33. 373248
  34. 804357
  35. 195112
  36. 912673
  37. 3375
  38. 91125
  39. 262144
  40. 970299

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