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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 646 · 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. 1.540² =
  2. 2.319² =
  3. 3.937² =
  4. 4.925² =
  5. 5.299² =
  6. 6.302² =
  7. 7.711² =
  8. 8.350² =
  9. 9.399² =
  10. 10.253² =
  11. 11.353² =
  12. 12.176² =
  13. 13.395² =
  14. 14.642² =
  15. 15.601² =
  16. 16.2617² =
  17. 17.374² =
  18. 18.673² =
  19. 19.330² =
  20. 20.402² =
  21. 21.272² =
  22. 22.839² =
  23. 23.600² =
  24. 24.872² =
  25. 25.151² =
  26. 26.491² =
  27. 27.633² =
  28. 28.412² =
  29. 29.745² =
  30. 30.239² =
  31. 31.3384² =
  32. 32.486² =
  33. 33.313² =
  34. 34.2053² =
  35. 35.994² =
  36. 36.873² =
  37. 37.3270² =
  38. 38.762² =
  39. 39.1188² =
  40. 40.8901² =

Answer key

  1. 291600
  2. 101761
  3. 877969
  4. 855625
  5. 89401
  6. 91204
  7. 505521
  8. 122500
  9. 159201
  10. 64009
  11. 124609
  12. 30976
  13. 156025
  14. 412164
  15. 361201
  16. 6848689
  17. 139876
  18. 452929
  19. 108900
  20. 161604
  21. 73984
  22. 703921
  23. 360000
  24. 760384
  25. 22801
  26. 241081
  27. 400689
  28. 169744
  29. 555025
  30. 57121
  31. 11451456
  32. 236196
  33. 97969
  34. 4214809
  35. 988036
  36. 762129
  37. 10692900
  38. 580644
  39. 1411344
  40. 79227801

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