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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 379 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.766² =
  2. 2.196² =
  3. 3.581² =
  4. 4.5976² =
  5. 5.301² =
  6. 6.282² =
  7. 7.282² =
  8. 8.136² =
  9. 9.5884² =
  10. 10.462² =
  11. 11.936² =
  12. 12.986² =
  13. 13.258² =
  14. 14.1817² =
  15. 15.1561² =
  16. 16.8262² =
  17. 17.429² =
  18. 18.679² =
  19. 19.5023² =
  20. 20.7513² =
  21. 21.7881² =
  22. 22.3870² =
  23. 23.590² =
  24. 24.2766² =
  25. 25.934² =
  26. 26.9544² =
  27. 27.629² =
  28. 28.389² =
  29. 29.4895² =
  30. 30.121² =
  31. 31.191² =
  32. 32.279² =
  33. 33.592² =
  34. 34.116² =
  35. 35.408² =
  36. 36.256² =
  37. 37.9762² =
  38. 38.2404² =
  39. 39.7250² =
  40. 40.916² =

Answer key

  1. 586756
  2. 38416
  3. 337561
  4. 35712576
  5. 90601
  6. 79524
  7. 79524
  8. 18496
  9. 34621456
  10. 213444
  11. 876096
  12. 972196
  13. 66564
  14. 3301489
  15. 2436721
  16. 68260644
  17. 184041
  18. 461041
  19. 25230529
  20. 56445169
  21. 62110161
  22. 14976900
  23. 348100
  24. 7650756
  25. 872356
  26. 91087936
  27. 395641
  28. 151321
  29. 23961025
  30. 14641
  31. 36481
  32. 77841
  33. 350464
  34. 13456
  35. 166464
  36. 65536
  37. 95296644
  38. 5779216
  39. 52562500
  40. 839056

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