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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 98 · 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. 1.31³ =
  2. 2.81³ =
  3. 3.26³ =
  4. 4.75³ =
  5. 5.12³ =
  6. 6.56³ =
  7. 7.28³ =
  8. 8.76³ =
  9. 9.55³ =
  10. 10.87³ =
  11. 11.59³ =
  12. 12.28³ =
  13. 13.58³ =
  14. 14.25³ =
  15. 15.28³ =
  16. 16.43³ =
  17. 17.53³ =
  18. 18.51³ =
  19. 19.11³ =
  20. 20.62³ =
  21. 21.21³ =
  22. 22.76³ =
  23. 23.93³ =
  24. 24.22³ =
  25. 25.67³ =
  26. 26.38³ =
  27. 27.75³ =
  28. 28.32³ =
  29. 29.34³ =
  30. 30.79³ =
  31. 31.21³ =
  32. 32.35³ =
  33. 33.23³ =
  34. 34.66³ =
  35. 35.41³ =
  36. 36.41³ =
  37. 37.61³ =
  38. 38.71³ =
  39. 39.41³ =
  40. 40.67³ =

Answer key

  1. 29791
  2. 531441
  3. 17576
  4. 421875
  5. 1728
  6. 175616
  7. 21952
  8. 438976
  9. 166375
  10. 658503
  11. 205379
  12. 21952
  13. 195112
  14. 15625
  15. 21952
  16. 79507
  17. 148877
  18. 132651
  19. 1331
  20. 238328
  21. 9261
  22. 438976
  23. 804357
  24. 10648
  25. 300763
  26. 54872
  27. 421875
  28. 32768
  29. 39304
  30. 493039
  31. 9261
  32. 42875
  33. 12167
  34. 287496
  35. 68921
  36. 68921
  37. 226981
  38. 357911
  39. 68921
  40. 300763

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