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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 473 · 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. 1.28³ =
  2. 2.41³ =
  3. 3.21³ =
  4. 4.14³ =
  5. 5.55³ =
  6. 6.31³ =
  7. 7.51³ =
  8. 8.24³ =
  9. 9.44³ =
  10. 10.14³ =
  11. 11.81³ =
  12. 12.53³ =
  13. 13.83³ =
  14. 14.99³ =
  15. 15.61³ =
  16. 16.52³ =
  17. 17.91³ =
  18. 18.74³ =
  19. 19.38³ =
  20. 20.73³ =
  21. 21.32³ =
  22. 22.26³ =
  23. 23.68³ =
  24. 24.47³ =
  25. 25.22³ =
  26. 26.11³ =
  27. 27.16³ =
  28. 28.18³ =
  29. 29.91³ =
  30. 30.31³ =
  31. 31.66³ =
  32. 32.41³ =
  33. 33.85³ =
  34. 34.81³ =
  35. 35.16³ =
  36. 36.73³ =
  37. 37.26³ =
  38. 38.81³ =
  39. 39.42³ =
  40. 40.55³ =

Answer key

  1. 21952
  2. 68921
  3. 9261
  4. 2744
  5. 166375
  6. 29791
  7. 132651
  8. 13824
  9. 85184
  10. 2744
  11. 531441
  12. 148877
  13. 571787
  14. 970299
  15. 226981
  16. 140608
  17. 753571
  18. 405224
  19. 54872
  20. 389017
  21. 32768
  22. 17576
  23. 314432
  24. 103823
  25. 10648
  26. 1331
  27. 4096
  28. 5832
  29. 753571
  30. 29791
  31. 287496
  32. 68921
  33. 614125
  34. 531441
  35. 4096
  36. 389017
  37. 17576
  38. 531441
  39. 74088
  40. 166375

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