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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 445 · 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. 1.88³ =
  2. 2.35³ =
  3. 3.12³ =
  4. 4.74³ =
  5. 5.73³ =
  6. 6.57³ =
  7. 7.31³ =
  8. 8.83³ =
  9. 9.89³ =
  10. 10.21³ =
  11. 11.69³ =
  12. 12.67³ =
  13. 13.15³ =
  14. 14.45³ =
  15. 15.69³ =
  16. 16.16³ =
  17. 17.67³ =
  18. 18.38³ =
  19. 19.52³ =
  20. 20.26³ =
  21. 21.79³ =
  22. 22.19³ =
  23. 23.33³ =
  24. 24.48³ =
  25. 25.19³ =
  26. 26.67³ =
  27. 27.98³ =
  28. 28.86³ =
  29. 29.14³ =
  30. 30.98³ =
  31. 31.95³ =
  32. 32.82³ =
  33. 33.39³ =
  34. 34.19³ =
  35. 35.77³ =
  36. 36.63³ =
  37. 37.37³ =
  38. 38.44³ =
  39. 39.77³ =
  40. 40.41³ =

Answer key

  1. 681472
  2. 42875
  3. 1728
  4. 405224
  5. 389017
  6. 185193
  7. 29791
  8. 571787
  9. 704969
  10. 9261
  11. 328509
  12. 300763
  13. 3375
  14. 91125
  15. 328509
  16. 4096
  17. 300763
  18. 54872
  19. 140608
  20. 17576
  21. 493039
  22. 6859
  23. 35937
  24. 110592
  25. 6859
  26. 300763
  27. 941192
  28. 636056
  29. 2744
  30. 941192
  31. 857375
  32. 551368
  33. 59319
  34. 6859
  35. 456533
  36. 250047
  37. 50653
  38. 85184
  39. 456533
  40. 68921

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