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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 198 · 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. 1.855² =
  2. 2.8085² =
  3. 3.1385² =
  4. 4.727² =
  5. 5.673² =
  6. 6.181² =
  7. 7.257² =
  8. 8.3367² =
  9. 9.491² =
  10. 10.188² =
  11. 11.144² =
  12. 12.955² =
  13. 13.906² =
  14. 14.188² =
  15. 15.394² =
  16. 16.185² =
  17. 17.314² =
  18. 18.151² =
  19. 19.197² =
  20. 20.784² =
  21. 21.7702² =
  22. 22.562² =
  23. 23.777² =
  24. 24.482² =
  25. 25.545² =
  26. 26.417² =
  27. 27.6236² =
  28. 28.3293² =
  29. 29.188² =
  30. 30.211² =
  31. 31.511² =
  32. 32.708² =
  33. 33.872² =
  34. 34.571² =
  35. 35.328² =
  36. 36.178² =
  37. 37.342² =
  38. 38.673² =
  39. 39.217² =
  40. 40.639² =

Answer key

  1. 731025
  2. 65367225
  3. 1918225
  4. 528529
  5. 452929
  6. 32761
  7. 66049
  8. 11336689
  9. 241081
  10. 35344
  11. 20736
  12. 912025
  13. 820836
  14. 35344
  15. 155236
  16. 34225
  17. 98596
  18. 22801
  19. 38809
  20. 614656
  21. 59320804
  22. 315844
  23. 603729
  24. 232324
  25. 297025
  26. 173889
  27. 38887696
  28. 10843849
  29. 35344
  30. 44521
  31. 261121
  32. 501264
  33. 760384
  34. 326041
  35. 107584
  36. 31684
  37. 116964
  38. 452929
  39. 47089
  40. 408321

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