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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 318 · 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. 1.453² =
  2. 2.846² =
  3. 3.561² =
  4. 4.9267² =
  5. 5.372² =
  6. 6.238² =
  7. 7.370² =
  8. 8.676² =
  9. 9.395² =
  10. 10.440² =
  11. 11.391² =
  12. 12.1366² =
  13. 13.4013² =
  14. 14.5196² =
  15. 15.234² =
  16. 16.3407² =
  17. 17.742² =
  18. 18.845² =
  19. 19.939² =
  20. 20.2915² =
  21. 21.2044² =
  22. 22.433² =
  23. 23.835² =
  24. 24.539² =
  25. 25.635² =
  26. 26.333² =
  27. 27.875² =
  28. 28.117² =
  29. 29.751² =
  30. 30.298² =
  31. 31.1053² =
  32. 32.9462² =
  33. 33.5712² =
  34. 34.151² =
  35. 35.520² =
  36. 36.219² =
  37. 37.922² =
  38. 38.539² =
  39. 39.191² =
  40. 40.262² =

Answer key

  1. 205209
  2. 715716
  3. 314721
  4. 85877289
  5. 138384
  6. 56644
  7. 136900
  8. 456976
  9. 156025
  10. 193600
  11. 152881
  12. 1865956
  13. 16104169
  14. 26998416
  15. 54756
  16. 11607649
  17. 550564
  18. 714025
  19. 881721
  20. 8497225
  21. 4177936
  22. 187489
  23. 697225
  24. 290521
  25. 403225
  26. 110889
  27. 765625
  28. 13689
  29. 564001
  30. 88804
  31. 1108809
  32. 89529444
  33. 32626944
  34. 22801
  35. 270400
  36. 47961
  37. 850084
  38. 290521
  39. 36481
  40. 68644

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