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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 47 · 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. 1.29³ =
  2. 2.25³ =
  3. 3.69³ =
  4. 4.67³ =
  5. 5.71³ =
  6. 6.58³ =
  7. 7.46³ =
  8. 8.38³ =
  9. 9.24³ =
  10. 10.99³ =
  11. 11.97³ =
  12. 12.58³ =
  13. 13.33³ =
  14. 14.75³ =
  15. 15.39³ =
  16. 16.64³ =
  17. 17.67³ =
  18. 18.91³ =
  19. 19.45³ =
  20. 20.61³ =
  21. 21.92³ =
  22. 22.91³ =
  23. 23.25³ =
  24. 24.28³ =
  25. 25.77³ =
  26. 26.32³ =
  27. 27.68³ =
  28. 28.51³ =
  29. 29.86³ =
  30. 30.61³ =
  31. 31.41³ =
  32. 32.17³ =
  33. 33.21³ =
  34. 34.42³ =
  35. 35.14³ =
  36. 36.22³ =
  37. 37.31³ =
  38. 38.16³ =
  39. 39.36³ =
  40. 40.35³ =

Answer key

  1. 24389
  2. 15625
  3. 328509
  4. 300763
  5. 357911
  6. 195112
  7. 97336
  8. 54872
  9. 13824
  10. 970299
  11. 912673
  12. 195112
  13. 35937
  14. 421875
  15. 59319
  16. 262144
  17. 300763
  18. 753571
  19. 91125
  20. 226981
  21. 778688
  22. 753571
  23. 15625
  24. 21952
  25. 456533
  26. 32768
  27. 314432
  28. 132651
  29. 636056
  30. 226981
  31. 68921
  32. 4913
  33. 9261
  34. 74088
  35. 2744
  36. 10648
  37. 29791
  38. 4096
  39. 46656
  40. 42875

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