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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 75 · 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. 1.825² =
  2. 2.295² =
  3. 3.291² =
  4. 4.821² =
  5. 5.779² =
  6. 6.888² =
  7. 7.505² =
  8. 8.8006² =
  9. 9.448² =
  10. 10.106² =
  11. 11.5366² =
  12. 12.305² =
  13. 13.994² =
  14. 14.484² =
  15. 15.109² =
  16. 16.742² =
  17. 17.504² =
  18. 18.689² =
  19. 19.7266² =
  20. 20.424² =
  21. 21.140² =
  22. 22.8192² =
  23. 23.4311² =
  24. 24.439² =
  25. 25.405² =
  26. 26.264² =
  27. 27.745² =
  28. 28.705² =
  29. 29.835² =
  30. 30.4950² =
  31. 31.592² =
  32. 32.118² =
  33. 33.449² =
  34. 34.2203² =
  35. 35.185² =
  36. 36.323² =
  37. 37.1891² =
  38. 38.123² =
  39. 39.831² =
  40. 40.1991² =

Answer key

  1. 680625
  2. 87025
  3. 84681
  4. 674041
  5. 606841
  6. 788544
  7. 255025
  8. 64096036
  9. 200704
  10. 11236
  11. 28793956
  12. 93025
  13. 988036
  14. 234256
  15. 11881
  16. 550564
  17. 254016
  18. 474721
  19. 52794756
  20. 179776
  21. 19600
  22. 67108864
  23. 18584721
  24. 192721
  25. 164025
  26. 69696
  27. 555025
  28. 497025
  29. 697225
  30. 24502500
  31. 350464
  32. 13924
  33. 201601
  34. 4853209
  35. 34225
  36. 104329
  37. 3575881
  38. 15129
  39. 690561
  40. 3964081

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