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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 225 · 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. 2.14³ =
  3. 3.78³ =
  4. 4.76³ =
  5. 5.48³ =
  6. 6.96³ =
  7. 7.55³ =
  8. 8.53³ =
  9. 9.74³ =
  10. 10.65³ =
  11. 11.66³ =
  12. 12.18³ =
  13. 13.76³ =
  14. 14.95³ =
  15. 15.14³ =
  16. 16.88³ =
  17. 17.97³ =
  18. 18.97³ =
  19. 19.43³ =
  20. 20.16³ =
  21. 21.93³ =
  22. 22.72³ =
  23. 23.52³ =
  24. 24.61³ =
  25. 25.86³ =
  26. 26.59³ =
  27. 27.43³ =
  28. 28.29³ =
  29. 29.11³ =
  30. 30.12³ =
  31. 31.55³ =
  32. 32.29³ =
  33. 33.54³ =
  34. 34.61³ =
  35. 35.81³ =
  36. 36.56³ =
  37. 37.33³ =
  38. 38.42³ =
  39. 39.31³ =
  40. 40.87³ =

Answer key

  1. 531441
  2. 2744
  3. 474552
  4. 438976
  5. 110592
  6. 884736
  7. 166375
  8. 148877
  9. 405224
  10. 274625
  11. 287496
  12. 5832
  13. 438976
  14. 857375
  15. 2744
  16. 681472
  17. 912673
  18. 912673
  19. 79507
  20. 4096
  21. 804357
  22. 373248
  23. 140608
  24. 226981
  25. 636056
  26. 205379
  27. 79507
  28. 24389
  29. 1331
  30. 1728
  31. 166375
  32. 24389
  33. 157464
  34. 226981
  35. 531441
  36. 175616
  37. 35937
  38. 74088
  39. 29791
  40. 658503

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