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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 861 · 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. 1.588² =
  2. 2.1834² =
  3. 3.846² =
  4. 4.396² =
  5. 5.1352² =
  6. 6.735² =
  7. 7.810² =
  8. 8.874² =
  9. 9.359² =
  10. 10.1790² =
  11. 11.4061² =
  12. 12.269² =
  13. 13.625² =
  14. 14.884² =
  15. 15.974² =
  16. 16.321² =
  17. 17.733² =
  18. 18.899² =
  19. 19.716² =
  20. 20.800² =
  21. 21.830² =
  22. 22.166² =
  23. 23.9932² =
  24. 24.267² =
  25. 25.323² =
  26. 26.8710² =
  27. 27.552² =
  28. 28.6513² =
  29. 29.727² =
  30. 30.452² =
  31. 31.250² =
  32. 32.443² =
  33. 33.5917² =
  34. 34.3566² =
  35. 35.248² =
  36. 36.587² =
  37. 37.4712² =
  38. 38.4845² =
  39. 39.425² =
  40. 40.402² =

Answer key

  1. 345744
  2. 3363556
  3. 715716
  4. 156816
  5. 1827904
  6. 540225
  7. 656100
  8. 763876
  9. 128881
  10. 3204100
  11. 16491721
  12. 72361
  13. 390625
  14. 781456
  15. 948676
  16. 103041
  17. 537289
  18. 808201
  19. 512656
  20. 640000
  21. 688900
  22. 27556
  23. 98644624
  24. 71289
  25. 104329
  26. 75864100
  27. 304704
  28. 42419169
  29. 528529
  30. 204304
  31. 62500
  32. 196249
  33. 35010889
  34. 12716356
  35. 61504
  36. 344569
  37. 22202944
  38. 23474025
  39. 180625
  40. 161604

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