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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 151 · 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. 1.49³ =
  2. 2.91³ =
  3. 3.76³ =
  4. 4.22³ =
  5. 5.68³ =
  6. 6.61³ =
  7. 7.82³ =
  8. 8.86³ =
  9. 9.74³ =
  10. 10.48³ =
  11. 11.43³ =
  12. 12.56³ =
  13. 13.65³ =
  14. 14.41³ =
  15. 15.17³ =
  16. 16.16³ =
  17. 17.59³ =
  18. 18.13³ =
  19. 19.71³ =
  20. 20.37³ =
  21. 21.88³ =
  22. 22.81³ =
  23. 23.34³ =
  24. 24.18³ =
  25. 25.13³ =
  26. 26.91³ =
  27. 27.21³ =
  28. 28.31³ =
  29. 29.93³ =
  30. 30.19³ =
  31. 31.88³ =
  32. 32.72³ =
  33. 33.56³ =
  34. 34.78³ =
  35. 35.45³ =
  36. 36.69³ =
  37. 37.51³ =
  38. 38.53³ =
  39. 39.67³ =
  40. 40.82³ =

Answer key

  1. 117649
  2. 753571
  3. 438976
  4. 10648
  5. 314432
  6. 226981
  7. 551368
  8. 636056
  9. 405224
  10. 110592
  11. 79507
  12. 175616
  13. 274625
  14. 68921
  15. 4913
  16. 4096
  17. 205379
  18. 2197
  19. 357911
  20. 50653
  21. 681472
  22. 531441
  23. 39304
  24. 5832
  25. 2197
  26. 753571
  27. 9261
  28. 29791
  29. 804357
  30. 6859
  31. 681472
  32. 373248
  33. 175616
  34. 474552
  35. 91125
  36. 328509
  37. 132651
  38. 148877
  39. 300763
  40. 551368

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