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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 720 · 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. 1.99³ =
  2. 2.84³ =
  3. 3.28³ =
  4. 4.88³ =
  5. 5.75³ =
  6. 6.54³ =
  7. 7.69³ =
  8. 8.92³ =
  9. 9.15³ =
  10. 10.66³ =
  11. 11.94³ =
  12. 12.15³ =
  13. 13.87³ =
  14. 14.49³ =
  15. 15.35³ =
  16. 16.82³ =
  17. 17.47³ =
  18. 18.88³ =
  19. 19.22³ =
  20. 20.67³ =
  21. 21.16³ =
  22. 22.72³ =
  23. 23.36³ =
  24. 24.19³ =
  25. 25.22³ =
  26. 26.74³ =
  27. 27.28³ =
  28. 28.68³ =
  29. 29.57³ =
  30. 30.62³ =
  31. 31.58³ =
  32. 32.58³ =
  33. 33.25³ =
  34. 34.22³ =
  35. 35.34³ =
  36. 36.13³ =
  37. 37.34³ =
  38. 38.97³ =
  39. 39.31³ =
  40. 40.71³ =

Answer key

  1. 970299
  2. 592704
  3. 21952
  4. 681472
  5. 421875
  6. 157464
  7. 328509
  8. 778688
  9. 3375
  10. 287496
  11. 830584
  12. 3375
  13. 658503
  14. 117649
  15. 42875
  16. 551368
  17. 103823
  18. 681472
  19. 10648
  20. 300763
  21. 4096
  22. 373248
  23. 46656
  24. 6859
  25. 10648
  26. 405224
  27. 21952
  28. 314432
  29. 185193
  30. 238328
  31. 195112
  32. 195112
  33. 15625
  34. 10648
  35. 39304
  36. 2197
  37. 39304
  38. 912673
  39. 29791
  40. 357911

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