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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 162 · 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. 1.81³ =
  2. 2.78³ =
  3. 3.31³ =
  4. 4.36³ =
  5. 5.83³ =
  6. 6.17³ =
  7. 7.83³ =
  8. 8.65³ =
  9. 9.31³ =
  10. 10.52³ =
  11. 11.13³ =
  12. 12.21³ =
  13. 13.91³ =
  14. 14.21³ =
  15. 15.21³ =
  16. 16.44³ =
  17. 17.26³ =
  18. 18.51³ =
  19. 19.21³ =
  20. 20.17³ =
  21. 21.68³ =
  22. 22.31³ =
  23. 23.81³ =
  24. 24.36³ =
  25. 25.91³ =
  26. 26.76³ =
  27. 27.73³ =
  28. 28.25³ =
  29. 29.41³ =
  30. 30.75³ =
  31. 31.71³ =
  32. 32.69³ =
  33. 33.69³ =
  34. 34.57³ =
  35. 35.98³ =
  36. 36.53³ =
  37. 37.32³ =
  38. 38.62³ =
  39. 39.41³ =
  40. 40.26³ =

Answer key

  1. 531441
  2. 474552
  3. 29791
  4. 46656
  5. 571787
  6. 4913
  7. 571787
  8. 274625
  9. 29791
  10. 140608
  11. 2197
  12. 9261
  13. 753571
  14. 9261
  15. 9261
  16. 85184
  17. 17576
  18. 132651
  19. 9261
  20. 4913
  21. 314432
  22. 29791
  23. 531441
  24. 46656
  25. 753571
  26. 438976
  27. 389017
  28. 15625
  29. 68921
  30. 421875
  31. 357911
  32. 328509
  33. 328509
  34. 185193
  35. 941192
  36. 148877
  37. 32768
  38. 238328
  39. 68921
  40. 17576

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