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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 354 · 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. 1.5232² =
  2. 2.828² =
  3. 3.167² =
  4. 4.316² =
  5. 5.112² =
  6. 6.131² =
  7. 7.823² =
  8. 8.957² =
  9. 9.841² =
  10. 10.3980² =
  11. 11.867² =
  12. 12.830² =
  13. 13.448² =
  14. 14.569² =
  15. 15.194² =
  16. 16.196² =
  17. 17.956² =
  18. 18.1003² =
  19. 19.666² =
  20. 20.581² =
  21. 21.122² =
  22. 22.900² =
  23. 23.3183² =
  24. 24.215² =
  25. 25.3119² =
  26. 26.755² =
  27. 27.5733² =
  28. 28.179² =
  29. 29.227² =
  30. 30.138² =
  31. 31.3432² =
  32. 32.552² =
  33. 33.1790² =
  34. 34.416² =
  35. 35.353² =
  36. 36.410² =
  37. 37.877² =
  38. 38.211² =
  39. 39.4138² =
  40. 40.3792² =

Answer key

  1. 27373824
  2. 685584
  3. 27889
  4. 99856
  5. 12544
  6. 17161
  7. 677329
  8. 915849
  9. 707281
  10. 15840400
  11. 751689
  12. 688900
  13. 200704
  14. 323761
  15. 37636
  16. 38416
  17. 913936
  18. 1006009
  19. 443556
  20. 337561
  21. 14884
  22. 810000
  23. 10131489
  24. 46225
  25. 9728161
  26. 570025
  27. 32867289
  28. 32041
  29. 51529
  30. 19044
  31. 11778624
  32. 304704
  33. 3204100
  34. 173056
  35. 124609
  36. 168100
  37. 769129
  38. 44521
  39. 17123044
  40. 14379264

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