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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 724 · 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. 1.25³ =
  2. 2.29³ =
  3. 3.86³ =
  4. 4.28³ =
  5. 5.65³ =
  6. 6.24³ =
  7. 7.21³ =
  8. 8.43³ =
  9. 9.87³ =
  10. 10.55³ =
  11. 11.75³ =
  12. 12.34³ =
  13. 13.83³ =
  14. 14.14³ =
  15. 15.74³ =
  16. 16.51³ =
  17. 17.62³ =
  18. 18.83³ =
  19. 19.91³ =
  20. 20.18³ =
  21. 21.72³ =
  22. 22.75³ =
  23. 23.33³ =
  24. 24.53³ =
  25. 25.81³ =
  26. 26.31³ =
  27. 27.99³ =
  28. 28.96³ =
  29. 29.78³ =
  30. 30.97³ =
  31. 31.41³ =
  32. 32.87³ =
  33. 33.18³ =
  34. 34.66³ =
  35. 35.19³ =
  36. 36.61³ =
  37. 37.88³ =
  38. 38.74³ =
  39. 39.85³ =
  40. 40.24³ =

Answer key

  1. 15625
  2. 24389
  3. 636056
  4. 21952
  5. 274625
  6. 13824
  7. 9261
  8. 79507
  9. 658503
  10. 166375
  11. 421875
  12. 39304
  13. 571787
  14. 2744
  15. 405224
  16. 132651
  17. 238328
  18. 571787
  19. 753571
  20. 5832
  21. 373248
  22. 421875
  23. 35937
  24. 148877
  25. 531441
  26. 29791
  27. 970299
  28. 884736
  29. 474552
  30. 912673
  31. 68921
  32. 658503
  33. 5832
  34. 287496
  35. 6859
  36. 226981
  37. 681472
  38. 405224
  39. 614125
  40. 13824

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