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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 156 · 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. 1.35³ =
  2. 2.83³ =
  3. 3.65³ =
  4. 4.66³ =
  5. 5.52³ =
  6. 6.73³ =
  7. 7.16³ =
  8. 8.92³ =
  9. 9.64³ =
  10. 10.27³ =
  11. 11.59³ =
  12. 12.72³ =
  13. 13.97³ =
  14. 14.21³ =
  15. 15.13³ =
  16. 16.59³ =
  17. 17.61³ =
  18. 18.54³ =
  19. 19.91³ =
  20. 20.61³ =
  21. 21.45³ =
  22. 22.21³ =
  23. 23.31³ =
  24. 24.83³ =
  25. 25.68³ =
  26. 26.35³ =
  27. 27.22³ =
  28. 28.48³ =
  29. 29.76³ =
  30. 30.19³ =
  31. 31.94³ =
  32. 32.51³ =
  33. 33.33³ =
  34. 34.18³ =
  35. 35.43³ =
  36. 36.33³ =
  37. 37.85³ =
  38. 38.91³ =
  39. 39.68³ =
  40. 40.14³ =

Answer key

  1. 42875
  2. 571787
  3. 274625
  4. 287496
  5. 140608
  6. 389017
  7. 4096
  8. 778688
  9. 262144
  10. 19683
  11. 205379
  12. 373248
  13. 912673
  14. 9261
  15. 2197
  16. 205379
  17. 226981
  18. 157464
  19. 753571
  20. 226981
  21. 91125
  22. 9261
  23. 29791
  24. 571787
  25. 314432
  26. 42875
  27. 10648
  28. 110592
  29. 438976
  30. 6859
  31. 830584
  32. 132651
  33. 35937
  34. 5832
  35. 79507
  36. 35937
  37. 614125
  38. 753571
  39. 314432
  40. 2744

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