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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 105 · 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. 1.117² =
  2. 2.7574² =
  3. 3.105² =
  4. 4.811² =
  5. 5.7998² =
  6. 6.238² =
  7. 7.276² =
  8. 8.795² =
  9. 9.900² =
  10. 10.633² =
  11. 11.291² =
  12. 12.675² =
  13. 13.895² =
  14. 14.290² =
  15. 15.752² =
  16. 16.342² =
  17. 17.134² =
  18. 18.571² =
  19. 19.9980² =
  20. 20.7811² =
  21. 21.998² =
  22. 22.405² =
  23. 23.3521² =
  24. 24.1989² =
  25. 25.316² =
  26. 26.8204² =
  27. 27.523² =
  28. 28.797² =
  29. 29.151² =
  30. 30.608² =
  31. 31.301² =
  32. 32.1587² =
  33. 33.497² =
  34. 34.9046² =
  35. 35.162² =
  36. 36.6230² =
  37. 37.5861² =
  38. 38.971² =
  39. 39.899² =
  40. 40.552² =

Answer key

  1. 13689
  2. 57365476
  3. 11025
  4. 657721
  5. 63968004
  6. 56644
  7. 76176
  8. 632025
  9. 810000
  10. 400689
  11. 84681
  12. 455625
  13. 801025
  14. 84100
  15. 565504
  16. 116964
  17. 17956
  18. 326041
  19. 99600400
  20. 61011721
  21. 996004
  22. 164025
  23. 12397441
  24. 3956121
  25. 99856
  26. 67305616
  27. 273529
  28. 635209
  29. 22801
  30. 369664
  31. 90601
  32. 2518569
  33. 247009
  34. 81830116
  35. 26244
  36. 38812900
  37. 34351321
  38. 942841
  39. 808201
  40. 304704

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