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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 46 · 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. 1.4329² =
  2. 2.596² =
  3. 3.316² =
  4. 4.319² =
  5. 5.7892² =
  6. 6.621² =
  7. 7.239² =
  8. 8.825² =
  9. 9.292² =
  10. 10.243² =
  11. 11.970² =
  12. 12.3516² =
  13. 13.8798² =
  14. 14.109² =
  15. 15.3201² =
  16. 16.830² =
  17. 17.5877² =
  18. 18.747² =
  19. 19.415² =
  20. 20.356² =
  21. 21.363² =
  22. 22.6847² =
  23. 23.120² =
  24. 24.314² =
  25. 25.660² =
  26. 26.245² =
  27. 27.880² =
  28. 28.541² =
  29. 29.997² =
  30. 30.173² =
  31. 31.517² =
  32. 32.916² =
  33. 33.165² =
  34. 34.200² =
  35. 35.357² =
  36. 36.953² =
  37. 37.857² =
  38. 38.985² =
  39. 39.5990² =
  40. 40.358² =

Answer key

  1. 18740241
  2. 355216
  3. 99856
  4. 101761
  5. 62283664
  6. 385641
  7. 57121
  8. 680625
  9. 85264
  10. 59049
  11. 940900
  12. 12362256
  13. 77404804
  14. 11881
  15. 10246401
  16. 688900
  17. 34539129
  18. 558009
  19. 172225
  20. 126736
  21. 131769
  22. 46881409
  23. 14400
  24. 98596
  25. 435600
  26. 60025
  27. 774400
  28. 292681
  29. 994009
  30. 29929
  31. 267289
  32. 839056
  33. 27225
  34. 40000
  35. 127449
  36. 908209
  37. 734449
  38. 970225
  39. 35880100
  40. 128164

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