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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 815 · 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. 1.831² =
  2. 2.4884² =
  3. 3.613² =
  4. 4.219² =
  5. 5.122² =
  6. 6.828² =
  7. 7.625² =
  8. 8.6296² =
  9. 9.579² =
  10. 10.7794² =
  11. 11.161² =
  12. 12.1589² =
  13. 13.300² =
  14. 14.4961² =
  15. 15.279² =
  16. 16.188² =
  17. 17.572² =
  18. 18.541² =
  19. 19.104² =
  20. 20.257² =
  21. 21.465² =
  22. 22.278² =
  23. 23.540² =
  24. 24.6695² =
  25. 25.498² =
  26. 26.508² =
  27. 27.5186² =
  28. 28.292² =
  29. 29.179² =
  30. 30.269² =
  31. 31.418² =
  32. 32.5271² =
  33. 33.176² =
  34. 34.964² =
  35. 35.148² =
  36. 36.755² =
  37. 37.886² =
  38. 38.221² =
  39. 39.651² =
  40. 40.764² =

Answer key

  1. 690561
  2. 23853456
  3. 375769
  4. 47961
  5. 14884
  6. 685584
  7. 390625
  8. 39639616
  9. 335241
  10. 60746436
  11. 25921
  12. 2524921
  13. 90000
  14. 24611521
  15. 77841
  16. 35344
  17. 327184
  18. 292681
  19. 10816
  20. 66049
  21. 216225
  22. 77284
  23. 291600
  24. 44823025
  25. 248004
  26. 258064
  27. 26894596
  28. 85264
  29. 32041
  30. 72361
  31. 174724
  32. 27783441
  33. 30976
  34. 929296
  35. 21904
  36. 570025
  37. 784996
  38. 48841
  39. 423801
  40. 583696

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