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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 820 · 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. 1.44³ =
  2. 2.88³ =
  3. 3.58³ =
  4. 4.42³ =
  5. 5.74³ =
  6. 6.39³ =
  7. 7.18³ =
  8. 8.79³ =
  9. 9.16³ =
  10. 10.26³ =
  11. 11.97³ =
  12. 12.72³ =
  13. 13.13³ =
  14. 14.13³ =
  15. 15.31³ =
  16. 16.25³ =
  17. 17.13³ =
  18. 18.44³ =
  19. 19.31³ =
  20. 20.84³ =
  21. 21.78³ =
  22. 22.33³ =
  23. 23.21³ =
  24. 24.25³ =
  25. 25.56³ =
  26. 26.36³ =
  27. 27.38³ =
  28. 28.78³ =
  29. 29.21³ =
  30. 30.29³ =
  31. 31.73³ =
  32. 32.67³ =
  33. 33.58³ =
  34. 34.91³ =
  35. 35.39³ =
  36. 36.59³ =
  37. 37.11³ =
  38. 38.91³ =
  39. 39.79³ =
  40. 40.57³ =

Answer key

  1. 85184
  2. 681472
  3. 195112
  4. 74088
  5. 405224
  6. 59319
  7. 5832
  8. 493039
  9. 4096
  10. 17576
  11. 912673
  12. 373248
  13. 2197
  14. 2197
  15. 29791
  16. 15625
  17. 2197
  18. 85184
  19. 29791
  20. 592704
  21. 474552
  22. 35937
  23. 9261
  24. 15625
  25. 175616
  26. 46656
  27. 54872
  28. 474552
  29. 9261
  30. 24389
  31. 389017
  32. 300763
  33. 195112
  34. 753571
  35. 59319
  36. 205379
  37. 1331
  38. 753571
  39. 493039
  40. 185193

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