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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 625 · 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. 1.589² =
  2. 2.701² =
  3. 3.239² =
  4. 4.127² =
  5. 5.4608² =
  6. 6.983² =
  7. 7.827² =
  8. 8.7918² =
  9. 9.147² =
  10. 10.2681² =
  11. 11.892² =
  12. 12.474² =
  13. 13.350² =
  14. 14.425² =
  15. 15.227² =
  16. 16.147² =
  17. 17.826² =
  18. 18.9699² =
  19. 19.205² =
  20. 20.893² =
  21. 21.455² =
  22. 22.4320² =
  23. 23.347² =
  24. 24.361² =
  25. 25.788² =
  26. 26.127² =
  27. 27.6496² =
  28. 28.831² =
  29. 29.809² =
  30. 30.800² =
  31. 31.976² =
  32. 32.5447² =
  33. 33.794² =
  34. 34.979² =
  35. 35.3465² =
  36. 36.878² =
  37. 37.489² =
  38. 38.429² =
  39. 39.2539² =
  40. 40.6682² =

Answer key

  1. 346921
  2. 491401
  3. 57121
  4. 16129
  5. 21233664
  6. 966289
  7. 683929
  8. 62694724
  9. 21609
  10. 7187761
  11. 795664
  12. 224676
  13. 122500
  14. 180625
  15. 51529
  16. 21609
  17. 682276
  18. 94070601
  19. 42025
  20. 797449
  21. 207025
  22. 18662400
  23. 120409
  24. 130321
  25. 620944
  26. 16129
  27. 42198016
  28. 690561
  29. 654481
  30. 640000
  31. 952576
  32. 29669809
  33. 630436
  34. 958441
  35. 12006225
  36. 770884
  37. 239121
  38. 184041
  39. 6446521
  40. 44649124

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