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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 228 · 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. 1.831² =
  2. 2.571² =
  3. 3.874² =
  4. 4.974² =
  5. 5.762² =
  6. 6.867² =
  7. 7.1336² =
  8. 8.261² =
  9. 9.749² =
  10. 10.906² =
  11. 11.295² =
  12. 12.291² =
  13. 13.602² =
  14. 14.1557² =
  15. 15.735² =
  16. 16.368² =
  17. 17.482² =
  18. 18.142² =
  19. 19.399² =
  20. 20.6830² =
  21. 21.283² =
  22. 22.719² =
  23. 23.706² =
  24. 24.172² =
  25. 25.453² =
  26. 26.564² =
  27. 27.1078² =
  28. 28.391² =
  29. 29.568² =
  30. 30.3390² =
  31. 31.271² =
  32. 32.751² =
  33. 33.766² =
  34. 34.167² =
  35. 35.280² =
  36. 36.5181² =
  37. 37.6837² =
  38. 38.987² =
  39. 39.6056² =
  40. 40.242² =

Answer key

  1. 690561
  2. 326041
  3. 763876
  4. 948676
  5. 580644
  6. 751689
  7. 1784896
  8. 68121
  9. 561001
  10. 820836
  11. 87025
  12. 84681
  13. 362404
  14. 2424249
  15. 540225
  16. 135424
  17. 232324
  18. 20164
  19. 159201
  20. 46648900
  21. 80089
  22. 516961
  23. 498436
  24. 29584
  25. 205209
  26. 318096
  27. 1162084
  28. 152881
  29. 322624
  30. 11492100
  31. 73441
  32. 564001
  33. 586756
  34. 27889
  35. 78400
  36. 26842761
  37. 46744569
  38. 974169
  39. 36675136
  40. 58564

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