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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 261 · 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. 1.157² =
  2. 2.958² =
  3. 3.9498² =
  4. 4.998² =
  5. 5.3860² =
  6. 6.8003² =
  7. 7.201² =
  8. 8.663² =
  9. 9.578² =
  10. 10.8116² =
  11. 11.9261² =
  12. 12.9420² =
  13. 13.579² =
  14. 14.796² =
  15. 15.322² =
  16. 16.7682² =
  17. 17.732² =
  18. 18.3011² =
  19. 19.255² =
  20. 20.257² =
  21. 21.884² =
  22. 22.7640² =
  23. 23.7623² =
  24. 24.381² =
  25. 25.346² =
  26. 26.9021² =
  27. 27.790² =
  28. 28.802² =
  29. 29.676² =
  30. 30.369² =
  31. 31.299² =
  32. 32.412² =
  33. 33.249² =
  34. 34.635² =
  35. 35.7142² =
  36. 36.356² =
  37. 37.2029² =
  38. 38.6543² =
  39. 39.8507² =
  40. 40.7364² =

Answer key

  1. 24649
  2. 917764
  3. 90212004
  4. 996004
  5. 14899600
  6. 64048009
  7. 40401
  8. 439569
  9. 334084
  10. 65869456
  11. 85766121
  12. 88736400
  13. 335241
  14. 633616
  15. 103684
  16. 59013124
  17. 535824
  18. 9066121
  19. 65025
  20. 66049
  21. 781456
  22. 58369600
  23. 58110129
  24. 145161
  25. 119716
  26. 81378441
  27. 624100
  28. 643204
  29. 456976
  30. 136161
  31. 89401
  32. 169744
  33. 62001
  34. 403225
  35. 51008164
  36. 126736
  37. 4116841
  38. 42810849
  39. 72369049
  40. 54228496

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