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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 761 · 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. 1.503² =
  2. 2.5911² =
  3. 3.895² =
  4. 4.992² =
  5. 5.155² =
  6. 6.307² =
  7. 7.4791² =
  8. 8.835² =
  9. 9.672² =
  10. 10.1202² =
  11. 11.263² =
  12. 12.4823² =
  13. 13.626² =
  14. 14.227² =
  15. 15.128² =
  16. 16.897² =
  17. 17.8722² =
  18. 18.154² =
  19. 19.298² =
  20. 20.439² =
  21. 21.1397² =
  22. 22.204² =
  23. 23.491² =
  24. 24.239² =
  25. 25.5598² =
  26. 26.572² =
  27. 27.933² =
  28. 28.541² =
  29. 29.445² =
  30. 30.655² =
  31. 31.6741² =
  32. 32.981² =
  33. 33.430² =
  34. 34.845² =
  35. 35.9643² =
  36. 36.315² =
  37. 37.457² =
  38. 38.384² =
  39. 39.420² =
  40. 40.337² =

Answer key

  1. 253009
  2. 34939921
  3. 801025
  4. 984064
  5. 24025
  6. 94249
  7. 22953681
  8. 697225
  9. 451584
  10. 1444804
  11. 69169
  12. 23261329
  13. 391876
  14. 51529
  15. 16384
  16. 804609
  17. 76073284
  18. 23716
  19. 88804
  20. 192721
  21. 1951609
  22. 41616
  23. 241081
  24. 57121
  25. 31337604
  26. 327184
  27. 870489
  28. 292681
  29. 198025
  30. 429025
  31. 45441081
  32. 962361
  33. 184900
  34. 714025
  35. 92987449
  36. 99225
  37. 208849
  38. 147456
  39. 176400
  40. 113569

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