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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 433 · 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. 1.31³ =
  2. 2.45³ =
  3. 3.67³ =
  4. 4.66³ =
  5. 5.91³ =
  6. 6.49³ =
  7. 7.53³ =
  8. 8.57³ =
  9. 9.82³ =
  10. 10.59³ =
  11. 11.97³ =
  12. 12.84³ =
  13. 13.81³ =
  14. 14.97³ =
  15. 15.59³ =
  16. 16.55³ =
  17. 17.21³ =
  18. 18.21³ =
  19. 19.34³ =
  20. 20.15³ =
  21. 21.53³ =
  22. 22.42³ =
  23. 23.97³ =
  24. 24.97³ =
  25. 25.15³ =
  26. 26.15³ =
  27. 27.43³ =
  28. 28.58³ =
  29. 29.51³ =
  30. 30.72³ =
  31. 31.88³ =
  32. 32.72³ =
  33. 33.34³ =
  34. 34.85³ =
  35. 35.38³ =
  36. 36.56³ =
  37. 37.29³ =
  38. 38.51³ =
  39. 39.48³ =
  40. 40.55³ =

Answer key

  1. 29791
  2. 91125
  3. 300763
  4. 287496
  5. 753571
  6. 117649
  7. 148877
  8. 185193
  9. 551368
  10. 205379
  11. 912673
  12. 592704
  13. 531441
  14. 912673
  15. 205379
  16. 166375
  17. 9261
  18. 9261
  19. 39304
  20. 3375
  21. 148877
  22. 74088
  23. 912673
  24. 912673
  25. 3375
  26. 3375
  27. 79507
  28. 195112
  29. 132651
  30. 373248
  31. 681472
  32. 373248
  33. 39304
  34. 614125
  35. 54872
  36. 175616
  37. 24389
  38. 132651
  39. 110592
  40. 166375

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