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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 841 · 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. 1.28³ =
  2. 2.41³ =
  3. 3.61³ =
  4. 4.25³ =
  5. 5.85³ =
  6. 6.92³ =
  7. 7.23³ =
  8. 8.98³ =
  9. 9.32³ =
  10. 10.74³ =
  11. 11.48³ =
  12. 12.87³ =
  13. 13.33³ =
  14. 14.85³ =
  15. 15.48³ =
  16. 16.21³ =
  17. 17.93³ =
  18. 18.87³ =
  19. 19.55³ =
  20. 20.21³ =
  21. 21.16³ =
  22. 22.69³ =
  23. 23.88³ =
  24. 24.52³ =
  25. 25.61³ =
  26. 26.38³ =
  27. 27.61³ =
  28. 28.91³ =
  29. 29.33³ =
  30. 30.12³ =
  31. 31.63³ =
  32. 32.12³ =
  33. 33.63³ =
  34. 34.87³ =
  35. 35.68³ =
  36. 36.78³ =
  37. 37.86³ =
  38. 38.32³ =
  39. 39.76³ =
  40. 40.64³ =

Answer key

  1. 21952
  2. 68921
  3. 226981
  4. 15625
  5. 614125
  6. 778688
  7. 12167
  8. 941192
  9. 32768
  10. 405224
  11. 110592
  12. 658503
  13. 35937
  14. 614125
  15. 110592
  16. 9261
  17. 804357
  18. 658503
  19. 166375
  20. 9261
  21. 4096
  22. 328509
  23. 681472
  24. 140608
  25. 226981
  26. 54872
  27. 226981
  28. 753571
  29. 35937
  30. 1728
  31. 250047
  32. 1728
  33. 250047
  34. 658503
  35. 314432
  36. 474552
  37. 636056
  38. 32768
  39. 438976
  40. 262144

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