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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 855 · 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. 1.172² =
  2. 2.391² =
  3. 3.3756² =
  4. 4.205² =
  5. 5.309² =
  6. 6.305² =
  7. 7.484² =
  8. 8.995² =
  9. 9.646² =
  10. 10.909² =
  11. 11.132² =
  12. 12.414² =
  13. 13.164² =
  14. 14.3109² =
  15. 15.727² =
  16. 16.655² =
  17. 17.985² =
  18. 18.920² =
  19. 19.225² =
  20. 20.241² =
  21. 21.504² =
  22. 22.156² =
  23. 23.759² =
  24. 24.972² =
  25. 25.122² =
  26. 26.358² =
  27. 27.190² =
  28. 28.667² =
  29. 29.969² =
  30. 30.797² =
  31. 31.865² =
  32. 32.574² =
  33. 33.611² =
  34. 34.1880² =
  35. 35.319² =
  36. 36.704² =
  37. 37.881² =
  38. 38.206² =
  39. 39.352² =
  40. 40.1932² =

Answer key

  1. 29584
  2. 152881
  3. 14107536
  4. 42025
  5. 95481
  6. 93025
  7. 234256
  8. 990025
  9. 417316
  10. 826281
  11. 17424
  12. 171396
  13. 26896
  14. 9665881
  15. 528529
  16. 429025
  17. 970225
  18. 846400
  19. 50625
  20. 58081
  21. 254016
  22. 24336
  23. 576081
  24. 944784
  25. 14884
  26. 128164
  27. 36100
  28. 444889
  29. 938961
  30. 635209
  31. 748225
  32. 329476
  33. 373321
  34. 3534400
  35. 101761
  36. 495616
  37. 776161
  38. 42436
  39. 123904
  40. 3732624

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