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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 250 · 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. 1.12³ =
  2. 2.12³ =
  3. 3.11³ =
  4. 4.71³ =
  5. 5.54³ =
  6. 6.23³ =
  7. 7.59³ =
  8. 8.17³ =
  9. 9.48³ =
  10. 10.16³ =
  11. 11.65³ =
  12. 12.85³ =
  13. 13.15³ =
  14. 14.11³ =
  15. 15.32³ =
  16. 16.59³ =
  17. 17.16³ =
  18. 18.32³ =
  19. 19.54³ =
  20. 20.13³ =
  21. 21.21³ =
  22. 22.78³ =
  23. 23.39³ =
  24. 24.71³ =
  25. 25.12³ =
  26. 26.84³ =
  27. 27.42³ =
  28. 28.66³ =
  29. 29.37³ =
  30. 30.72³ =
  31. 31.25³ =
  32. 32.82³ =
  33. 33.68³ =
  34. 34.74³ =
  35. 35.12³ =
  36. 36.66³ =
  37. 37.12³ =
  38. 38.31³ =
  39. 39.55³ =
  40. 40.49³ =

Answer key

  1. 1728
  2. 1728
  3. 1331
  4. 357911
  5. 157464
  6. 12167
  7. 205379
  8. 4913
  9. 110592
  10. 4096
  11. 274625
  12. 614125
  13. 3375
  14. 1331
  15. 32768
  16. 205379
  17. 4096
  18. 32768
  19. 157464
  20. 2197
  21. 9261
  22. 474552
  23. 59319
  24. 357911
  25. 1728
  26. 592704
  27. 74088
  28. 287496
  29. 50653
  30. 373248
  31. 15625
  32. 551368
  33. 314432
  34. 405224
  35. 1728
  36. 287496
  37. 1728
  38. 29791
  39. 166375
  40. 117649

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