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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 87 · 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. 1.159² =
  2. 2.249² =
  3. 3.154² =
  4. 4.822² =
  5. 5.634² =
  6. 6.868² =
  7. 7.400² =
  8. 8.555² =
  9. 9.322² =
  10. 10.4839² =
  11. 11.744² =
  12. 12.9238² =
  13. 13.881² =
  14. 14.8422² =
  15. 15.2965² =
  16. 16.3252² =
  17. 17.1345² =
  18. 18.956² =
  19. 19.8848² =
  20. 20.261² =
  21. 21.902² =
  22. 22.331² =
  23. 23.2654² =
  24. 24.839² =
  25. 25.2582² =
  26. 26.101² =
  27. 27.134² =
  28. 28.3325² =
  29. 29.262² =
  30. 30.133² =
  31. 31.632² =
  32. 32.272² =
  33. 33.4743² =
  34. 34.877² =
  35. 35.650² =
  36. 36.763² =
  37. 37.723² =
  38. 38.531² =
  39. 39.401² =
  40. 40.373² =

Answer key

  1. 25281
  2. 62001
  3. 23716
  4. 675684
  5. 401956
  6. 753424
  7. 160000
  8. 308025
  9. 103684
  10. 23415921
  11. 553536
  12. 85340644
  13. 776161
  14. 70930084
  15. 8791225
  16. 10575504
  17. 1809025
  18. 913936
  19. 78287104
  20. 68121
  21. 813604
  22. 109561
  23. 7043716
  24. 703921
  25. 6666724
  26. 10201
  27. 17956
  28. 11055625
  29. 68644
  30. 17689
  31. 399424
  32. 73984
  33. 22496049
  34. 769129
  35. 422500
  36. 582169
  37. 522729
  38. 281961
  39. 160801
  40. 139129

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