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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 788 · 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. 1.276² =
  2. 2.4659² =
  3. 3.170² =
  4. 4.9353² =
  5. 5.211² =
  6. 6.433² =
  7. 7.854² =
  8. 8.106² =
  9. 9.920² =
  10. 10.910² =
  11. 11.295² =
  12. 12.242² =
  13. 13.1947² =
  14. 14.624² =
  15. 15.2224² =
  16. 16.4524² =
  17. 17.182² =
  18. 18.538² =
  19. 19.150² =
  20. 20.5477² =
  21. 21.1370² =
  22. 22.964² =
  23. 23.4746² =
  24. 24.6648² =
  25. 25.8232² =
  26. 26.126² =
  27. 27.1177² =
  28. 28.5348² =
  29. 29.403² =
  30. 30.519² =
  31. 31.197² =
  32. 32.9711² =
  33. 33.118² =
  34. 34.410² =
  35. 35.910² =
  36. 36.8484² =
  37. 37.9348² =
  38. 38.787² =
  39. 39.217² =
  40. 40.2078² =

Answer key

  1. 76176
  2. 21706281
  3. 28900
  4. 87478609
  5. 44521
  6. 187489
  7. 729316
  8. 11236
  9. 846400
  10. 828100
  11. 87025
  12. 58564
  13. 3790809
  14. 389376
  15. 4946176
  16. 20466576
  17. 33124
  18. 289444
  19. 22500
  20. 29997529
  21. 1876900
  22. 929296
  23. 22524516
  24. 44195904
  25. 67765824
  26. 15876
  27. 1385329
  28. 28601104
  29. 162409
  30. 269361
  31. 38809
  32. 94303521
  33. 13924
  34. 168100
  35. 828100
  36. 71978256
  37. 87385104
  38. 619369
  39. 47089
  40. 4318084

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