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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 698 · 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. 1.240² =
  2. 2.8394² =
  3. 3.437² =
  4. 4.790² =
  5. 5.304² =
  6. 6.943² =
  7. 7.5288² =
  8. 8.141² =
  9. 9.507² =
  10. 10.354² =
  11. 11.4232² =
  12. 12.843² =
  13. 13.180² =
  14. 14.5212² =
  15. 15.7444² =
  16. 16.8435² =
  17. 17.3358² =
  18. 18.8388² =
  19. 19.906² =
  20. 20.892² =
  21. 21.361² =
  22. 22.682² =
  23. 23.4773² =
  24. 24.628² =
  25. 25.386² =
  26. 26.872² =
  27. 27.470² =
  28. 28.224² =
  29. 29.724² =
  30. 30.4971² =
  31. 31.5495² =
  32. 32.9064² =
  33. 33.115² =
  34. 34.8766² =
  35. 35.210² =
  36. 36.909² =
  37. 37.813² =
  38. 38.812² =
  39. 39.8644² =
  40. 40.5672² =

Answer key

  1. 57600
  2. 70459236
  3. 190969
  4. 624100
  5. 92416
  6. 889249
  7. 27962944
  8. 19881
  9. 257049
  10. 125316
  11. 17909824
  12. 710649
  13. 32400
  14. 27164944
  15. 55413136
  16. 71149225
  17. 11276164
  18. 70358544
  19. 820836
  20. 795664
  21. 130321
  22. 465124
  23. 22781529
  24. 394384
  25. 148996
  26. 760384
  27. 220900
  28. 50176
  29. 524176
  30. 24710841
  31. 30195025
  32. 82156096
  33. 13225
  34. 76842756
  35. 44100
  36. 826281
  37. 660969
  38. 659344
  39. 74718736
  40. 32171584

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