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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 817 · 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. 1.1775² =
  2. 2.461² =
  3. 3.130² =
  4. 4.3147² =
  5. 5.7980² =
  6. 6.8859² =
  7. 7.872² =
  8. 8.9076² =
  9. 9.184² =
  10. 10.7248² =
  11. 11.703² =
  12. 12.717² =
  13. 13.752² =
  14. 14.264² =
  15. 15.986² =
  16. 16.607² =
  17. 17.970² =
  18. 18.502² =
  19. 19.3973² =
  20. 20.879² =
  21. 21.406² =
  22. 22.8957² =
  23. 23.622² =
  24. 24.225² =
  25. 25.615² =
  26. 26.983² =
  27. 27.209² =
  28. 28.2143² =
  29. 29.326² =
  30. 30.8965² =
  31. 31.7902² =
  32. 32.248² =
  33. 33.487² =
  34. 34.8815² =
  35. 35.845² =
  36. 36.688² =
  37. 37.773² =
  38. 38.3851² =
  39. 39.5048² =
  40. 40.362² =

Answer key

  1. 3150625
  2. 212521
  3. 16900
  4. 9903609
  5. 63680400
  6. 78481881
  7. 760384
  8. 82373776
  9. 33856
  10. 52533504
  11. 494209
  12. 514089
  13. 565504
  14. 69696
  15. 972196
  16. 368449
  17. 940900
  18. 252004
  19. 15784729
  20. 772641
  21. 164836
  22. 80227849
  23. 386884
  24. 50625
  25. 378225
  26. 966289
  27. 43681
  28. 4592449
  29. 106276
  30. 80371225
  31. 62441604
  32. 61504
  33. 237169
  34. 77704225
  35. 714025
  36. 473344
  37. 597529
  38. 14830201
  39. 25482304
  40. 131044

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