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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 172 · 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. 1.411² =
  2. 2.583² =
  3. 3.715² =
  4. 4.191² =
  5. 5.7300² =
  6. 6.315² =
  7. 7.126² =
  8. 8.167² =
  9. 9.159² =
  10. 10.420² =
  11. 11.196² =
  12. 12.465² =
  13. 13.737² =
  14. 14.463² =
  15. 15.861² =
  16. 16.878² =
  17. 17.496² =
  18. 18.509² =
  19. 19.9106² =
  20. 20.834² =
  21. 21.9576² =
  22. 22.270² =
  23. 23.748² =
  24. 24.854² =
  25. 25.9243² =
  26. 26.865² =
  27. 27.706² =
  28. 28.866² =
  29. 29.3298² =
  30. 30.536² =
  31. 31.736² =
  32. 32.810² =
  33. 33.4451² =
  34. 34.831² =
  35. 35.3786² =
  36. 36.6210² =
  37. 37.959² =
  38. 38.569² =
  39. 39.278² =
  40. 40.215² =

Answer key

  1. 168921
  2. 339889
  3. 511225
  4. 36481
  5. 53290000
  6. 99225
  7. 15876
  8. 27889
  9. 25281
  10. 176400
  11. 38416
  12. 216225
  13. 543169
  14. 214369
  15. 741321
  16. 770884
  17. 246016
  18. 259081
  19. 82919236
  20. 695556
  21. 91699776
  22. 72900
  23. 559504
  24. 729316
  25. 85433049
  26. 748225
  27. 498436
  28. 749956
  29. 10876804
  30. 287296
  31. 541696
  32. 656100
  33. 19811401
  34. 690561
  35. 14333796
  36. 38564100
  37. 919681
  38. 323761
  39. 77284
  40. 46225

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