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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 160 · 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. 1.542² =
  2. 2.248² =
  3. 3.782² =
  4. 4.755² =
  5. 5.1412² =
  6. 6.528² =
  7. 7.351² =
  8. 8.126² =
  9. 9.1452² =
  10. 10.128² =
  11. 11.1798² =
  12. 12.6116² =
  13. 13.454² =
  14. 14.234² =
  15. 15.741² =
  16. 16.180² =
  17. 17.686² =
  18. 18.118² =
  19. 19.770² =
  20. 20.2203² =
  21. 21.515² =
  22. 22.272² =
  23. 23.1916² =
  24. 24.5306² =
  25. 25.788² =
  26. 26.801² =
  27. 27.4123² =
  28. 28.3761² =
  29. 29.2173² =
  30. 30.233² =
  31. 31.9629² =
  32. 32.193² =
  33. 33.9318² =
  34. 34.5966² =
  35. 35.664² =
  36. 36.402² =
  37. 37.640² =
  38. 38.277² =
  39. 39.8041² =
  40. 40.999² =

Answer key

  1. 293764
  2. 61504
  3. 611524
  4. 570025
  5. 1993744
  6. 278784
  7. 123201
  8. 15876
  9. 2108304
  10. 16384
  11. 3232804
  12. 37405456
  13. 206116
  14. 54756
  15. 549081
  16. 32400
  17. 470596
  18. 13924
  19. 592900
  20. 4853209
  21. 265225
  22. 73984
  23. 3671056
  24. 28153636
  25. 620944
  26. 641601
  27. 16999129
  28. 14145121
  29. 4721929
  30. 54289
  31. 92717641
  32. 37249
  33. 86825124
  34. 35593156
  35. 440896
  36. 161604
  37. 409600
  38. 76729
  39. 64657681
  40. 998001

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