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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 615 · 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. 1.395² =
  2. 2.643² =
  3. 3.344² =
  4. 4.189² =
  5. 5.101² =
  6. 6.2238² =
  7. 7.427² =
  8. 8.9986² =
  9. 9.330² =
  10. 10.215² =
  11. 11.428² =
  12. 12.419² =
  13. 13.2166² =
  14. 14.762² =
  15. 15.419² =
  16. 16.535² =
  17. 17.462² =
  18. 18.471² =
  19. 19.464² =
  20. 20.661² =
  21. 21.344² =
  22. 22.5943² =
  23. 23.823² =
  24. 24.128² =
  25. 25.5955² =
  26. 26.1970² =
  27. 27.630² =
  28. 28.936² =
  29. 29.659² =
  30. 30.105² =
  31. 31.894² =
  32. 32.306² =
  33. 33.705² =
  34. 34.958² =
  35. 35.6435² =
  36. 36.2845² =
  37. 37.332² =
  38. 38.4304² =
  39. 39.119² =
  40. 40.239² =

Answer key

  1. 156025
  2. 413449
  3. 118336
  4. 35721
  5. 10201
  6. 5008644
  7. 182329
  8. 99720196
  9. 108900
  10. 46225
  11. 183184
  12. 175561
  13. 4691556
  14. 580644
  15. 175561
  16. 286225
  17. 213444
  18. 221841
  19. 215296
  20. 436921
  21. 118336
  22. 35319249
  23. 677329
  24. 16384
  25. 35462025
  26. 3880900
  27. 396900
  28. 876096
  29. 434281
  30. 11025
  31. 799236
  32. 93636
  33. 497025
  34. 917764
  35. 41409225
  36. 8094025
  37. 110224
  38. 18524416
  39. 14161
  40. 57121

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