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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 221 · 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. 1.571² =
  2. 2.1072² =
  3. 3.6020² =
  4. 4.471² =
  5. 5.196² =
  6. 6.622² =
  7. 7.1393² =
  8. 8.399² =
  9. 9.627² =
  10. 10.658² =
  11. 11.253² =
  12. 12.7550² =
  13. 13.935² =
  14. 14.5838² =
  15. 15.4489² =
  16. 16.2913² =
  17. 17.742² =
  18. 18.129² =
  19. 19.663² =
  20. 20.489² =
  21. 21.245² =
  22. 22.451² =
  23. 23.569² =
  24. 24.378² =
  25. 25.862² =
  26. 26.3460² =
  27. 27.966² =
  28. 28.499² =
  29. 29.7488² =
  30. 30.347² =
  31. 31.8709² =
  32. 32.901² =
  33. 33.377² =
  34. 34.457² =
  35. 35.537² =
  36. 36.183² =
  37. 37.481² =
  38. 38.872² =
  39. 39.936² =
  40. 40.3564² =

Answer key

  1. 326041
  2. 1149184
  3. 36240400
  4. 221841
  5. 38416
  6. 386884
  7. 1940449
  8. 159201
  9. 393129
  10. 432964
  11. 64009
  12. 57002500
  13. 874225
  14. 34082244
  15. 20151121
  16. 8485569
  17. 550564
  18. 16641
  19. 439569
  20. 239121
  21. 60025
  22. 203401
  23. 323761
  24. 142884
  25. 743044
  26. 11971600
  27. 933156
  28. 249001
  29. 56070144
  30. 120409
  31. 75846681
  32. 811801
  33. 142129
  34. 208849
  35. 288369
  36. 33489
  37. 231361
  38. 760384
  39. 876096
  40. 12702096

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