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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 728 · 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. 1.210² =
  2. 2.9415² =
  3. 3.896² =
  4. 4.4468² =
  5. 5.4968² =
  6. 6.584² =
  7. 7.860² =
  8. 8.840² =
  9. 9.337² =
  10. 10.749² =
  11. 11.306² =
  12. 12.469² =
  13. 13.3586² =
  14. 14.3581² =
  15. 15.414² =
  16. 16.9544² =
  17. 17.518² =
  18. 18.939² =
  19. 19.4290² =
  20. 20.326² =
  21. 21.598² =
  22. 22.7167² =
  23. 23.707² =
  24. 24.4548² =
  25. 25.141² =
  26. 26.9358² =
  27. 27.773² =
  28. 28.435² =
  29. 29.244² =
  30. 30.2880² =
  31. 31.427² =
  32. 32.8933² =
  33. 33.3134² =
  34. 34.766² =
  35. 35.483² =
  36. 36.613² =
  37. 37.5143² =
  38. 38.6403² =
  39. 39.486² =
  40. 40.495² =

Answer key

  1. 44100
  2. 88642225
  3. 802816
  4. 19963024
  5. 24681024
  6. 341056
  7. 739600
  8. 705600
  9. 113569
  10. 561001
  11. 93636
  12. 219961
  13. 12859396
  14. 12823561
  15. 171396
  16. 91087936
  17. 268324
  18. 881721
  19. 18404100
  20. 106276
  21. 357604
  22. 51365889
  23. 499849
  24. 20684304
  25. 19881
  26. 87572164
  27. 597529
  28. 189225
  29. 59536
  30. 8294400
  31. 182329
  32. 79798489
  33. 9821956
  34. 586756
  35. 233289
  36. 375769
  37. 26450449
  38. 40998409
  39. 236196
  40. 245025

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