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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 526 · 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. 1.2211² =
  2. 2.497² =
  3. 3.3618² =
  4. 4.227² =
  5. 5.847² =
  6. 6.378² =
  7. 7.923² =
  8. 8.537² =
  9. 9.827² =
  10. 10.350² =
  11. 11.2811² =
  12. 12.1332² =
  13. 13.976² =
  14. 14.7922² =
  15. 15.637² =
  16. 16.881² =
  17. 17.3879² =
  18. 18.888² =
  19. 19.674² =
  20. 20.7566² =
  21. 21.944² =
  22. 22.105² =
  23. 23.473² =
  24. 24.596² =
  25. 25.188² =
  26. 26.178² =
  27. 27.197² =
  28. 28.7349² =
  29. 29.756² =
  30. 30.673² =
  31. 31.2976² =
  32. 32.7353² =
  33. 33.380² =
  34. 34.1675² =
  35. 35.290² =
  36. 36.8480² =
  37. 37.133² =
  38. 38.546² =
  39. 39.287² =
  40. 40.858² =

Answer key

  1. 4888521
  2. 247009
  3. 13089924
  4. 51529
  5. 717409
  6. 142884
  7. 851929
  8. 288369
  9. 683929
  10. 122500
  11. 7901721
  12. 1774224
  13. 952576
  14. 62758084
  15. 405769
  16. 776161
  17. 15046641
  18. 788544
  19. 454276
  20. 57244356
  21. 891136
  22. 11025
  23. 223729
  24. 355216
  25. 35344
  26. 31684
  27. 38809
  28. 54007801
  29. 571536
  30. 452929
  31. 8856576
  32. 54066609
  33. 144400
  34. 2805625
  35. 84100
  36. 71910400
  37. 17689
  38. 298116
  39. 82369
  40. 736164

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