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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 843 · 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. 1.569² =
  2. 2.354² =
  3. 3.6704² =
  4. 4.2624² =
  5. 5.9825² =
  6. 6.715² =
  7. 7.703² =
  8. 8.313² =
  9. 9.229² =
  10. 10.3587² =
  11. 11.4925² =
  12. 12.463² =
  13. 13.979² =
  14. 14.353² =
  15. 15.103² =
  16. 16.712² =
  17. 17.161² =
  18. 18.3107² =
  19. 19.899² =
  20. 20.1758² =
  21. 21.431² =
  22. 22.575² =
  23. 23.452² =
  24. 24.656² =
  25. 25.427² =
  26. 26.893² =
  27. 27.1584² =
  28. 28.5640² =
  29. 29.447² =
  30. 30.5677² =
  31. 31.476² =
  32. 32.1040² =
  33. 33.5400² =
  34. 34.6253² =
  35. 35.812² =
  36. 36.853² =
  37. 37.304² =
  38. 38.4622² =
  39. 39.5665² =
  40. 40.528² =

Answer key

  1. 323761
  2. 125316
  3. 44943616
  4. 6885376
  5. 96530625
  6. 511225
  7. 494209
  8. 97969
  9. 52441
  10. 12866569
  11. 24255625
  12. 214369
  13. 958441
  14. 124609
  15. 10609
  16. 506944
  17. 25921
  18. 9653449
  19. 808201
  20. 3090564
  21. 185761
  22. 330625
  23. 204304
  24. 430336
  25. 182329
  26. 797449
  27. 2509056
  28. 31809600
  29. 199809
  30. 32228329
  31. 226576
  32. 1081600
  33. 29160000
  34. 39100009
  35. 659344
  36. 727609
  37. 92416
  38. 21362884
  39. 32092225
  40. 278784

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