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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 401 · 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. 1.503² =
  2. 2.717² =
  3. 3.4654² =
  4. 4.480² =
  5. 5.653² =
  6. 6.676² =
  7. 7.1428² =
  8. 8.367² =
  9. 9.144² =
  10. 10.549² =
  11. 11.773² =
  12. 12.872² =
  13. 13.911² =
  14. 14.362² =
  15. 15.224² =
  16. 16.692² =
  17. 17.244² =
  18. 18.886² =
  19. 19.488² =
  20. 20.155² =
  21. 21.209² =
  22. 22.530² =
  23. 23.4029² =
  24. 24.240² =
  25. 25.477² =
  26. 26.641² =
  27. 27.339² =
  28. 28.229² =
  29. 29.963² =
  30. 30.9197² =
  31. 31.1610² =
  32. 32.363² =
  33. 33.962² =
  34. 34.1380² =
  35. 35.6610² =
  36. 36.833² =
  37. 37.275² =
  38. 38.1371² =
  39. 39.573² =
  40. 40.7688² =

Answer key

  1. 253009
  2. 514089
  3. 21659716
  4. 230400
  5. 426409
  6. 456976
  7. 2039184
  8. 134689
  9. 20736
  10. 301401
  11. 597529
  12. 760384
  13. 829921
  14. 131044
  15. 50176
  16. 478864
  17. 59536
  18. 784996
  19. 238144
  20. 24025
  21. 43681
  22. 280900
  23. 16232841
  24. 57600
  25. 227529
  26. 410881
  27. 114921
  28. 52441
  29. 927369
  30. 84584809
  31. 2592100
  32. 131769
  33. 925444
  34. 1904400
  35. 43692100
  36. 693889
  37. 75625
  38. 1879641
  39. 328329
  40. 59105344

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