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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 428 · 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. 1.381² =
  2. 2.3790² =
  3. 3.948² =
  4. 4.761² =
  5. 5.570² =
  6. 6.879² =
  7. 7.638² =
  8. 8.712² =
  9. 9.1799² =
  10. 10.1190² =
  11. 11.590² =
  12. 12.412² =
  13. 13.824² =
  14. 14.674² =
  15. 15.920² =
  16. 16.942² =
  17. 17.790² =
  18. 18.459² =
  19. 19.809² =
  20. 20.1730² =
  21. 21.487² =
  22. 22.816² =
  23. 23.186² =
  24. 24.849² =
  25. 25.1902² =
  26. 26.404² =
  27. 27.9274² =
  28. 28.899² =
  29. 29.115² =
  30. 30.718² =
  31. 31.174² =
  32. 32.421² =
  33. 33.919² =
  34. 34.826² =
  35. 35.396² =
  36. 36.879² =
  37. 37.255² =
  38. 38.991² =
  39. 39.759² =
  40. 40.739² =

Answer key

  1. 145161
  2. 14364100
  3. 898704
  4. 579121
  5. 324900
  6. 772641
  7. 407044
  8. 506944
  9. 3236401
  10. 1416100
  11. 348100
  12. 169744
  13. 678976
  14. 454276
  15. 846400
  16. 887364
  17. 624100
  18. 210681
  19. 654481
  20. 2992900
  21. 237169
  22. 665856
  23. 34596
  24. 720801
  25. 3617604
  26. 163216
  27. 86007076
  28. 808201
  29. 13225
  30. 515524
  31. 30276
  32. 177241
  33. 844561
  34. 682276
  35. 156816
  36. 772641
  37. 65025
  38. 982081
  39. 576081
  40. 546121

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