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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 51 · 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. 1.281² =
  2. 2.426² =
  3. 3.465² =
  4. 4.992² =
  5. 5.206² =
  6. 6.1724² =
  7. 7.5427² =
  8. 8.951² =
  9. 9.4677² =
  10. 10.798² =
  11. 11.313² =
  12. 12.360² =
  13. 13.157² =
  14. 14.595² =
  15. 15.5152² =
  16. 16.326² =
  17. 17.142² =
  18. 18.3394² =
  19. 19.819² =
  20. 20.302² =
  21. 21.372² =
  22. 22.415² =
  23. 23.244² =
  24. 24.194² =
  25. 25.2473² =
  26. 26.887² =
  27. 27.3490² =
  28. 28.429² =
  29. 29.3707² =
  30. 30.770² =
  31. 31.946² =
  32. 32.509² =
  33. 33.216² =
  34. 34.8869² =
  35. 35.627² =
  36. 36.944² =
  37. 37.480² =
  38. 38.124² =
  39. 39.589² =
  40. 40.1189² =

Answer key

  1. 78961
  2. 181476
  3. 216225
  4. 984064
  5. 42436
  6. 2972176
  7. 29452329
  8. 904401
  9. 21874329
  10. 636804
  11. 97969
  12. 129600
  13. 24649
  14. 354025
  15. 26543104
  16. 106276
  17. 20164
  18. 11519236
  19. 670761
  20. 91204
  21. 138384
  22. 172225
  23. 59536
  24. 37636
  25. 6115729
  26. 786769
  27. 12180100
  28. 184041
  29. 13741849
  30. 592900
  31. 894916
  32. 259081
  33. 46656
  34. 78659161
  35. 393129
  36. 891136
  37. 230400
  38. 15376
  39. 346921
  40. 1413721

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