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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 593 · 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. 1.574² =
  2. 2.164² =
  3. 3.499² =
  4. 4.5045² =
  5. 5.266² =
  6. 6.155² =
  7. 7.572² =
  8. 8.6079² =
  9. 9.6853² =
  10. 10.9632² =
  11. 11.901² =
  12. 12.5144² =
  13. 13.635² =
  14. 14.714² =
  15. 15.731² =
  16. 16.105² =
  17. 17.7466² =
  18. 18.155² =
  19. 19.494² =
  20. 20.793² =
  21. 21.220² =
  22. 22.4193² =
  23. 23.784² =
  24. 24.4016² =
  25. 25.3610² =
  26. 26.9857² =
  27. 27.317² =
  28. 28.557² =
  29. 29.7078² =
  30. 30.2034² =
  31. 31.642² =
  32. 32.2377² =
  33. 33.915² =
  34. 34.4070² =
  35. 35.270² =
  36. 36.3148² =
  37. 37.644² =
  38. 38.3120² =
  39. 39.161² =
  40. 40.730² =

Answer key

  1. 329476
  2. 26896
  3. 249001
  4. 25452025
  5. 70756
  6. 24025
  7. 327184
  8. 36954241
  9. 46963609
  10. 92775424
  11. 811801
  12. 26460736
  13. 403225
  14. 509796
  15. 534361
  16. 11025
  17. 55741156
  18. 24025
  19. 244036
  20. 628849
  21. 48400
  22. 17581249
  23. 614656
  24. 16128256
  25. 13032100
  26. 97160449
  27. 100489
  28. 310249
  29. 50098084
  30. 4137156
  31. 412164
  32. 5650129
  33. 837225
  34. 16564900
  35. 72900
  36. 9909904
  37. 414736
  38. 9734400
  39. 25921
  40. 532900

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