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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 355 · 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. 1.4003² =
  2. 2.856² =
  3. 3.8951² =
  4. 4.222² =
  5. 5.341² =
  6. 6.5906² =
  7. 7.585² =
  8. 8.727² =
  9. 9.737² =
  10. 10.167² =
  11. 11.141² =
  12. 12.383² =
  13. 13.7962² =
  14. 14.351² =
  15. 15.469² =
  16. 16.452² =
  17. 17.448² =
  18. 18.916² =
  19. 19.833² =
  20. 20.2630² =
  21. 21.8394² =
  22. 22.134² =
  23. 23.629² =
  24. 24.825² =
  25. 25.2962² =
  26. 26.645² =
  27. 27.345² =
  28. 28.993² =
  29. 29.912² =
  30. 30.580² =
  31. 31.318² =
  32. 32.487² =
  33. 33.815² =
  34. 34.6265² =
  35. 35.762² =
  36. 36.258² =
  37. 37.5132² =
  38. 38.121² =
  39. 39.252² =
  40. 40.642² =

Answer key

  1. 16024009
  2. 732736
  3. 80120401
  4. 49284
  5. 116281
  6. 34880836
  7. 342225
  8. 528529
  9. 543169
  10. 27889
  11. 19881
  12. 146689
  13. 63393444
  14. 123201
  15. 219961
  16. 204304
  17. 200704
  18. 839056
  19. 693889
  20. 6916900
  21. 70459236
  22. 17956
  23. 395641
  24. 680625
  25. 8773444
  26. 416025
  27. 119025
  28. 986049
  29. 831744
  30. 336400
  31. 101124
  32. 237169
  33. 664225
  34. 39250225
  35. 580644
  36. 66564
  37. 26337424
  38. 14641
  39. 63504
  40. 412164

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