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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 385 · 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. 1.1244² =
  2. 2.623² =
  3. 3.6890² =
  4. 4.272² =
  5. 5.449² =
  6. 6.3866² =
  7. 7.6117² =
  8. 8.281² =
  9. 9.9345² =
  10. 10.2421² =
  11. 11.9740² =
  12. 12.127² =
  13. 13.561² =
  14. 14.624² =
  15. 15.563² =
  16. 16.193² =
  17. 17.9339² =
  18. 18.986² =
  19. 19.765² =
  20. 20.465² =
  21. 21.371² =
  22. 22.905² =
  23. 23.674² =
  24. 24.996² =
  25. 25.790² =
  26. 26.294² =
  27. 27.227² =
  28. 28.226² =
  29. 29.920² =
  30. 30.188² =
  31. 31.664² =
  32. 32.721² =
  33. 33.518² =
  34. 34.6305² =
  35. 35.4337² =
  36. 36.4404² =
  37. 37.597² =
  38. 38.104² =
  39. 39.5151² =
  40. 40.428² =

Answer key

  1. 1547536
  2. 388129
  3. 47472100
  4. 73984
  5. 201601
  6. 14945956
  7. 37417689
  8. 78961
  9. 87329025
  10. 5861241
  11. 94867600
  12. 16129
  13. 314721
  14. 389376
  15. 316969
  16. 37249
  17. 87216921
  18. 972196
  19. 585225
  20. 216225
  21. 137641
  22. 819025
  23. 454276
  24. 992016
  25. 624100
  26. 86436
  27. 51529
  28. 51076
  29. 846400
  30. 35344
  31. 440896
  32. 519841
  33. 268324
  34. 39753025
  35. 18809569
  36. 19395216
  37. 356409
  38. 10816
  39. 26532801
  40. 183184

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