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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 211 · 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. 2.17³ =
  3. 3.46³ =
  4. 4.51³ =
  5. 5.21³ =
  6. 6.91³ =
  7. 7.58³ =
  8. 8.31³ =
  9. 9.16³ =
  10. 10.45³ =
  11. 11.49³ =
  12. 12.18³ =
  13. 13.31³ =
  14. 14.61³ =
  15. 15.13³ =
  16. 16.59³ =
  17. 17.42³ =
  18. 18.35³ =
  19. 19.88³ =
  20. 20.62³ =
  21. 21.41³ =
  22. 22.95³ =
  23. 23.15³ =
  24. 24.11³ =
  25. 25.91³ =
  26. 26.49³ =
  27. 27.45³ =
  28. 28.69³ =
  29. 29.24³ =
  30. 30.98³ =
  31. 31.38³ =
  32. 32.34³ =
  33. 33.81³ =
  34. 34.29³ =
  35. 35.17³ =
  36. 36.69³ =
  37. 37.57³ =
  38. 38.25³ =
  39. 39.94³ =
  40. 40.98³ =

Answer key

  1. 42875
  2. 4913
  3. 97336
  4. 132651
  5. 9261
  6. 753571
  7. 195112
  8. 29791
  9. 4096
  10. 91125
  11. 117649
  12. 5832
  13. 29791
  14. 226981
  15. 2197
  16. 205379
  17. 74088
  18. 42875
  19. 681472
  20. 238328
  21. 68921
  22. 857375
  23. 3375
  24. 1331
  25. 753571
  26. 117649
  27. 91125
  28. 328509
  29. 13824
  30. 941192
  31. 54872
  32. 39304
  33. 531441
  34. 24389
  35. 4913
  36. 328509
  37. 185193
  38. 15625
  39. 830584
  40. 941192

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