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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 391 · 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. 1.17³ =
  2. 2.31³ =
  3. 3.58³ =
  4. 4.96³ =
  5. 5.17³ =
  6. 6.57³ =
  7. 7.84³ =
  8. 8.88³ =
  9. 9.67³ =
  10. 10.93³ =
  11. 11.35³ =
  12. 12.41³ =
  13. 13.15³ =
  14. 14.26³ =
  15. 15.69³ =
  16. 16.28³ =
  17. 17.69³ =
  18. 18.99³ =
  19. 19.84³ =
  20. 20.13³ =
  21. 21.98³ =
  22. 22.31³ =
  23. 23.26³ =
  24. 24.99³ =
  25. 25.79³ =
  26. 26.24³ =
  27. 27.81³ =
  28. 28.19³ =
  29. 29.84³ =
  30. 30.73³ =
  31. 31.21³ =
  32. 32.97³ =
  33. 33.25³ =
  34. 34.49³ =
  35. 35.56³ =
  36. 36.81³ =
  37. 37.85³ =
  38. 38.91³ =
  39. 39.84³ =
  40. 40.54³ =

Answer key

  1. 4913
  2. 29791
  3. 195112
  4. 884736
  5. 4913
  6. 185193
  7. 592704
  8. 681472
  9. 300763
  10. 804357
  11. 42875
  12. 68921
  13. 3375
  14. 17576
  15. 328509
  16. 21952
  17. 328509
  18. 970299
  19. 592704
  20. 2197
  21. 941192
  22. 29791
  23. 17576
  24. 970299
  25. 493039
  26. 13824
  27. 531441
  28. 6859
  29. 592704
  30. 389017
  31. 9261
  32. 912673
  33. 15625
  34. 117649
  35. 175616
  36. 531441
  37. 614125
  38. 753571
  39. 592704
  40. 157464

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