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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 640 · 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. 1.72³ =
  2. 2.25³ =
  3. 3.68³ =
  4. 4.31³ =
  5. 5.32³ =
  6. 6.37³ =
  7. 7.74³ =
  8. 8.41³ =
  9. 9.63³ =
  10. 10.45³ =
  11. 11.69³ =
  12. 12.19³ =
  13. 13.77³ =
  14. 14.93³ =
  15. 15.32³ =
  16. 16.61³ =
  17. 17.15³ =
  18. 18.58³ =
  19. 19.13³ =
  20. 20.63³ =
  21. 21.67³ =
  22. 22.64³ =
  23. 23.57³ =
  24. 24.31³ =
  25. 25.14³ =
  26. 26.73³ =
  27. 27.94³ =
  28. 28.77³ =
  29. 29.28³ =
  30. 30.41³ =
  31. 31.93³ =
  32. 32.21³ =
  33. 33.42³ =
  34. 34.99³ =
  35. 35.58³ =
  36. 36.31³ =
  37. 37.91³ =
  38. 38.81³ =
  39. 39.61³ =
  40. 40.72³ =

Answer key

  1. 373248
  2. 15625
  3. 314432
  4. 29791
  5. 32768
  6. 50653
  7. 405224
  8. 68921
  9. 250047
  10. 91125
  11. 328509
  12. 6859
  13. 456533
  14. 804357
  15. 32768
  16. 226981
  17. 3375
  18. 195112
  19. 2197
  20. 250047
  21. 300763
  22. 262144
  23. 185193
  24. 29791
  25. 2744
  26. 389017
  27. 830584
  28. 456533
  29. 21952
  30. 68921
  31. 804357
  32. 9261
  33. 74088
  34. 970299
  35. 195112
  36. 29791
  37. 753571
  38. 531441
  39. 226981
  40. 373248

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