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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 850 · 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. 1.15³ =
  2. 2.59³ =
  3. 3.24³ =
  4. 4.87³ =
  5. 5.92³ =
  6. 6.92³ =
  7. 7.14³ =
  8. 8.79³ =
  9. 9.16³ =
  10. 10.42³ =
  11. 11.81³ =
  12. 12.41³ =
  13. 13.84³ =
  14. 14.35³ =
  15. 15.77³ =
  16. 16.36³ =
  17. 17.91³ =
  18. 18.91³ =
  19. 19.26³ =
  20. 20.32³ =
  21. 21.13³ =
  22. 22.47³ =
  23. 23.98³ =
  24. 24.47³ =
  25. 25.41³ =
  26. 26.28³ =
  27. 27.73³ =
  28. 28.28³ =
  29. 29.42³ =
  30. 30.61³ =
  31. 31.61³ =
  32. 32.28³ =
  33. 33.56³ =
  34. 34.25³ =
  35. 35.38³ =
  36. 36.61³ =
  37. 37.57³ =
  38. 38.31³ =
  39. 39.75³ =
  40. 40.71³ =

Answer key

  1. 3375
  2. 205379
  3. 13824
  4. 658503
  5. 778688
  6. 778688
  7. 2744
  8. 493039
  9. 4096
  10. 74088
  11. 531441
  12. 68921
  13. 592704
  14. 42875
  15. 456533
  16. 46656
  17. 753571
  18. 753571
  19. 17576
  20. 32768
  21. 2197
  22. 103823
  23. 941192
  24. 103823
  25. 68921
  26. 21952
  27. 389017
  28. 21952
  29. 74088
  30. 226981
  31. 226981
  32. 21952
  33. 175616
  34. 15625
  35. 54872
  36. 226981
  37. 185193
  38. 29791
  39. 421875
  40. 357911

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