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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 831 · 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. 1.859² =
  2. 2.459² =
  3. 3.887² =
  4. 4.562² =
  5. 5.2154² =
  6. 6.406² =
  7. 7.1070² =
  8. 8.6602² =
  9. 9.908² =
  10. 10.437² =
  11. 11.6847² =
  12. 12.7390² =
  13. 13.710² =
  14. 14.399² =
  15. 15.296² =
  16. 16.8840² =
  17. 17.666² =
  18. 18.6639² =
  19. 19.160² =
  20. 20.9883² =
  21. 21.644² =
  22. 22.669² =
  23. 23.575² =
  24. 24.334² =
  25. 25.8585² =
  26. 26.701² =
  27. 27.993² =
  28. 28.231² =
  29. 29.123² =
  30. 30.7377² =
  31. 31.510² =
  32. 32.763² =
  33. 33.121² =
  34. 34.265² =
  35. 35.138² =
  36. 36.982² =
  37. 37.2416² =
  38. 38.784² =
  39. 39.821² =
  40. 40.6698² =

Answer key

  1. 737881
  2. 210681
  3. 786769
  4. 315844
  5. 4639716
  6. 164836
  7. 1144900
  8. 43586404
  9. 824464
  10. 190969
  11. 46881409
  12. 54612100
  13. 504100
  14. 159201
  15. 87616
  16. 78145600
  17. 443556
  18. 44076321
  19. 25600
  20. 97673689
  21. 414736
  22. 447561
  23. 330625
  24. 111556
  25. 73702225
  26. 491401
  27. 986049
  28. 53361
  29. 15129
  30. 54420129
  31. 260100
  32. 582169
  33. 14641
  34. 70225
  35. 19044
  36. 964324
  37. 5837056
  38. 614656
  39. 674041
  40. 44863204

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