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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 563 · 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. 1.817² =
  2. 2.327² =
  3. 3.768² =
  4. 4.243² =
  5. 5.829² =
  6. 6.666² =
  7. 7.332² =
  8. 8.727² =
  9. 9.5562² =
  10. 10.557² =
  11. 11.219² =
  12. 12.5782² =
  13. 13.8313² =
  14. 14.187² =
  15. 15.708² =
  16. 16.487² =
  17. 17.595² =
  18. 18.893² =
  19. 19.743² =
  20. 20.1320² =
  21. 21.663² =
  22. 22.142² =
  23. 23.632² =
  24. 24.828² =
  25. 25.583² =
  26. 26.486² =
  27. 27.1794² =
  28. 28.333² =
  29. 29.383² =
  30. 30.132² =
  31. 31.967² =
  32. 32.484² =
  33. 33.889² =
  34. 34.2918² =
  35. 35.4105² =
  36. 36.274² =
  37. 37.795² =
  38. 38.6959² =
  39. 39.859² =
  40. 40.5160² =

Answer key

  1. 667489
  2. 106929
  3. 589824
  4. 59049
  5. 687241
  6. 443556
  7. 110224
  8. 528529
  9. 30935844
  10. 310249
  11. 47961
  12. 33431524
  13. 69105969
  14. 34969
  15. 501264
  16. 237169
  17. 354025
  18. 797449
  19. 552049
  20. 1742400
  21. 439569
  22. 20164
  23. 399424
  24. 685584
  25. 339889
  26. 236196
  27. 3218436
  28. 110889
  29. 146689
  30. 17424
  31. 935089
  32. 234256
  33. 790321
  34. 8514724
  35. 16851025
  36. 75076
  37. 632025
  38. 48427681
  39. 737881
  40. 26625600

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