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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 940 · 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. 1.171² =
  2. 2.4040² =
  3. 3.604² =
  4. 4.7442² =
  5. 5.944² =
  6. 6.808² =
  7. 7.233² =
  8. 8.454² =
  9. 9.416² =
  10. 10.166² =
  11. 11.653² =
  12. 12.2192² =
  13. 13.159² =
  14. 14.779² =
  15. 15.741² =
  16. 16.483² =
  17. 17.557² =
  18. 18.619² =
  19. 19.417² =
  20. 20.5693² =
  21. 21.524² =
  22. 22.497² =
  23. 23.830² =
  24. 24.281² =
  25. 25.9704² =
  26. 26.941² =
  27. 27.596² =
  28. 28.894² =
  29. 29.903² =
  30. 30.956² =
  31. 31.9322² =
  32. 32.6818² =
  33. 33.798² =
  34. 34.443² =
  35. 35.780² =
  36. 36.7529² =
  37. 37.370² =
  38. 38.507² =
  39. 39.3177² =
  40. 40.374² =

Answer key

  1. 29241
  2. 16321600
  3. 364816
  4. 55383364
  5. 891136
  6. 652864
  7. 54289
  8. 206116
  9. 173056
  10. 27556
  11. 426409
  12. 4804864
  13. 25281
  14. 606841
  15. 549081
  16. 233289
  17. 310249
  18. 383161
  19. 173889
  20. 32410249
  21. 274576
  22. 247009
  23. 688900
  24. 78961
  25. 94167616
  26. 885481
  27. 355216
  28. 799236
  29. 815409
  30. 913936
  31. 86899684
  32. 46485124
  33. 636804
  34. 196249
  35. 608400
  36. 56685841
  37. 136900
  38. 257049
  39. 10093329
  40. 139876

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