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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 920 · 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. 1.27³ =
  2. 2.92³ =
  3. 3.79³ =
  4. 4.33³ =
  5. 5.41³ =
  6. 6.31³ =
  7. 7.22³ =
  8. 8.29³ =
  9. 9.41³ =
  10. 10.76³ =
  11. 11.79³ =
  12. 12.55³ =
  13. 13.54³ =
  14. 14.43³ =
  15. 15.59³ =
  16. 16.72³ =
  17. 17.53³ =
  18. 18.21³ =
  19. 19.81³ =
  20. 20.78³ =
  21. 21.91³ =
  22. 22.32³ =
  23. 23.31³ =
  24. 24.91³ =
  25. 25.41³ =
  26. 26.32³ =
  27. 27.33³ =
  28. 28.45³ =
  29. 29.47³ =
  30. 30.37³ =
  31. 31.11³ =
  32. 32.56³ =
  33. 33.72³ =
  34. 34.55³ =
  35. 35.86³ =
  36. 36.17³ =
  37. 37.41³ =
  38. 38.38³ =
  39. 39.12³ =
  40. 40.26³ =

Answer key

  1. 19683
  2. 778688
  3. 493039
  4. 35937
  5. 68921
  6. 29791
  7. 10648
  8. 24389
  9. 68921
  10. 438976
  11. 493039
  12. 166375
  13. 157464
  14. 79507
  15. 205379
  16. 373248
  17. 148877
  18. 9261
  19. 531441
  20. 474552
  21. 753571
  22. 32768
  23. 29791
  24. 753571
  25. 68921
  26. 32768
  27. 35937
  28. 91125
  29. 103823
  30. 50653
  31. 1331
  32. 175616
  33. 373248
  34. 166375
  35. 636056
  36. 4913
  37. 68921
  38. 54872
  39. 1728
  40. 17576

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