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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 491 · 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. 1.560² =
  2. 2.275² =
  3. 3.4487² =
  4. 4.829² =
  5. 5.644² =
  6. 6.799² =
  7. 7.329² =
  8. 8.268² =
  9. 9.347² =
  10. 10.7436² =
  11. 11.368² =
  12. 12.342² =
  13. 13.863² =
  14. 14.176² =
  15. 15.1548² =
  16. 16.949² =
  17. 17.554² =
  18. 18.197² =
  19. 19.390² =
  20. 20.299² =
  21. 21.1269² =
  22. 22.9596² =
  23. 23.982² =
  24. 24.137² =
  25. 25.991² =
  26. 26.3085² =
  27. 27.6944² =
  28. 28.4332² =
  29. 29.941² =
  30. 30.257² =
  31. 31.370² =
  32. 32.6134² =
  33. 33.2879² =
  34. 34.712² =
  35. 35.789² =
  36. 36.484² =
  37. 37.691² =
  38. 38.302² =
  39. 39.210² =
  40. 40.981² =

Answer key

  1. 313600
  2. 75625
  3. 20133169
  4. 687241
  5. 414736
  6. 638401
  7. 108241
  8. 71824
  9. 120409
  10. 55294096
  11. 135424
  12. 116964
  13. 744769
  14. 30976
  15. 2396304
  16. 900601
  17. 306916
  18. 38809
  19. 152100
  20. 89401
  21. 1610361
  22. 92083216
  23. 964324
  24. 18769
  25. 982081
  26. 9517225
  27. 48219136
  28. 18766224
  29. 885481
  30. 66049
  31. 136900
  32. 37625956
  33. 8288641
  34. 506944
  35. 622521
  36. 234256
  37. 477481
  38. 91204
  39. 44100
  40. 962361

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