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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 370 · 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. 1.403² =
  2. 2.219² =
  3. 3.295² =
  4. 4.792² =
  5. 5.976² =
  6. 6.585² =
  7. 7.331² =
  8. 8.431² =
  9. 9.504² =
  10. 10.893² =
  11. 11.8215² =
  12. 12.197² =
  13. 13.7267² =
  14. 14.1261² =
  15. 15.161² =
  16. 16.9981² =
  17. 17.3254² =
  18. 18.252² =
  19. 19.690² =
  20. 20.136² =
  21. 21.250² =
  22. 22.828² =
  23. 23.3316² =
  24. 24.128² =
  25. 25.254² =
  26. 26.454² =
  27. 27.819² =
  28. 28.156² =
  29. 29.6225² =
  30. 30.2379² =
  31. 31.117² =
  32. 32.589² =
  33. 33.2452² =
  34. 34.6307² =
  35. 35.372² =
  36. 36.687² =
  37. 37.783² =
  38. 38.172² =
  39. 39.488² =
  40. 40.505² =

Answer key

  1. 162409
  2. 47961
  3. 87025
  4. 627264
  5. 952576
  6. 342225
  7. 109561
  8. 185761
  9. 254016
  10. 797449
  11. 67486225
  12. 38809
  13. 52809289
  14. 1590121
  15. 25921
  16. 99620361
  17. 10588516
  18. 63504
  19. 476100
  20. 18496
  21. 62500
  22. 685584
  23. 10995856
  24. 16384
  25. 64516
  26. 206116
  27. 670761
  28. 24336
  29. 38750625
  30. 5659641
  31. 13689
  32. 346921
  33. 6012304
  34. 39778249
  35. 138384
  36. 471969
  37. 613089
  38. 29584
  39. 238144
  40. 255025

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