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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 829 · 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. 1.995² =
  2. 2.1035² =
  3. 3.830² =
  4. 4.452² =
  5. 5.206² =
  6. 6.2072² =
  7. 7.696² =
  8. 8.181² =
  9. 9.724² =
  10. 10.845² =
  11. 11.898² =
  12. 12.310² =
  13. 13.3114² =
  14. 14.8021² =
  15. 15.4082² =
  16. 16.286² =
  17. 17.373² =
  18. 18.113² =
  19. 19.800² =
  20. 20.701² =
  21. 21.4805² =
  22. 22.7979² =
  23. 23.864² =
  24. 24.920² =
  25. 25.1050² =
  26. 26.8549² =
  27. 27.364² =
  28. 28.346² =
  29. 29.839² =
  30. 30.7536² =
  31. 31.695² =
  32. 32.943² =
  33. 33.6284² =
  34. 34.916² =
  35. 35.243² =
  36. 36.146² =
  37. 37.279² =
  38. 38.1021² =
  39. 39.910² =
  40. 40.284² =

Answer key

  1. 990025
  2. 1071225
  3. 688900
  4. 204304
  5. 42436
  6. 4293184
  7. 484416
  8. 32761
  9. 524176
  10. 714025
  11. 806404
  12. 96100
  13. 9696996
  14. 64336441
  15. 16662724
  16. 81796
  17. 139129
  18. 12769
  19. 640000
  20. 491401
  21. 23088025
  22. 63664441
  23. 746496
  24. 846400
  25. 1102500
  26. 73085401
  27. 132496
  28. 119716
  29. 703921
  30. 56791296
  31. 483025
  32. 889249
  33. 39488656
  34. 839056
  35. 59049
  36. 21316
  37. 77841
  38. 1042441
  39. 828100
  40. 80656

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