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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 581 · 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. 1.99³ =
  2. 2.62³ =
  3. 3.34³ =
  4. 4.13³ =
  5. 5.34³ =
  6. 6.36³ =
  7. 7.94³ =
  8. 8.35³ =
  9. 9.86³ =
  10. 10.75³ =
  11. 11.51³ =
  12. 12.41³ =
  13. 13.83³ =
  14. 14.35³ =
  15. 15.82³ =
  16. 16.61³ =
  17. 17.61³ =
  18. 18.56³ =
  19. 19.77³ =
  20. 20.86³ =
  21. 21.26³ =
  22. 22.85³ =
  23. 23.25³ =
  24. 24.98³ =
  25. 25.32³ =
  26. 26.54³ =
  27. 27.91³ =
  28. 28.53³ =
  29. 29.17³ =
  30. 30.64³ =
  31. 31.28³ =
  32. 32.39³ =
  33. 33.49³ =
  34. 34.21³ =
  35. 35.43³ =
  36. 36.29³ =
  37. 37.45³ =
  38. 38.35³ =
  39. 39.97³ =
  40. 40.68³ =

Answer key

  1. 970299
  2. 238328
  3. 39304
  4. 2197
  5. 39304
  6. 46656
  7. 830584
  8. 42875
  9. 636056
  10. 421875
  11. 132651
  12. 68921
  13. 571787
  14. 42875
  15. 551368
  16. 226981
  17. 226981
  18. 175616
  19. 456533
  20. 636056
  21. 17576
  22. 614125
  23. 15625
  24. 941192
  25. 32768
  26. 157464
  27. 753571
  28. 148877
  29. 4913
  30. 262144
  31. 21952
  32. 59319
  33. 117649
  34. 9261
  35. 79507
  36. 24389
  37. 91125
  38. 42875
  39. 912673
  40. 314432

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