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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 180 · 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. 1.210² =
  2. 2.105² =
  3. 3.683² =
  4. 4.7455² =
  5. 5.826² =
  6. 6.294² =
  7. 7.6352² =
  8. 8.133² =
  9. 9.902² =
  10. 10.305² =
  11. 11.8274² =
  12. 12.526² =
  13. 13.104² =
  14. 14.591² =
  15. 15.5379² =
  16. 16.697² =
  17. 17.218² =
  18. 18.513² =
  19. 19.9949² =
  20. 20.395² =
  21. 21.854² =
  22. 22.364² =
  23. 23.427² =
  24. 24.441² =
  25. 25.8171² =
  26. 26.341² =
  27. 27.3444² =
  28. 28.300² =
  29. 29.6896² =
  30. 30.166² =
  31. 31.2314² =
  32. 32.8683² =
  33. 33.706² =
  34. 34.730² =
  35. 35.816² =
  36. 36.864² =
  37. 37.3969² =
  38. 38.901² =
  39. 39.408² =
  40. 40.698² =

Answer key

  1. 44100
  2. 11025
  3. 466489
  4. 55577025
  5. 682276
  6. 86436
  7. 40347904
  8. 17689
  9. 813604
  10. 93025
  11. 68459076
  12. 276676
  13. 10816
  14. 349281
  15. 28933641
  16. 485809
  17. 47524
  18. 263169
  19. 98982601
  20. 156025
  21. 729316
  22. 132496
  23. 182329
  24. 194481
  25. 66765241
  26. 116281
  27. 11861136
  28. 90000
  29. 47554816
  30. 27556
  31. 5354596
  32. 75394489
  33. 498436
  34. 532900
  35. 665856
  36. 746496
  37. 15752961
  38. 811801
  39. 166464
  40. 487204

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