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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 167 · 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. 1.990² =
  2. 2.4521² =
  3. 3.7595² =
  4. 4.941² =
  5. 5.9274² =
  6. 6.640² =
  7. 7.878² =
  8. 8.191² =
  9. 9.770² =
  10. 10.266² =
  11. 11.758² =
  12. 12.827² =
  13. 13.6790² =
  14. 14.229² =
  15. 15.232² =
  16. 16.571² =
  17. 17.703² =
  18. 18.944² =
  19. 19.247² =
  20. 20.188² =
  21. 21.984² =
  22. 22.516² =
  23. 23.505² =
  24. 24.618² =
  25. 25.619² =
  26. 26.7203² =
  27. 27.1443² =
  28. 28.3639² =
  29. 29.146² =
  30. 30.563² =
  31. 31.351² =
  32. 32.498² =
  33. 33.7729² =
  34. 34.117² =
  35. 35.132² =
  36. 36.580² =
  37. 37.2827² =
  38. 38.545² =
  39. 39.3854² =
  40. 40.733² =

Answer key

  1. 980100
  2. 20439441
  3. 57684025
  4. 885481
  5. 86007076
  6. 409600
  7. 770884
  8. 36481
  9. 592900
  10. 70756
  11. 574564
  12. 683929
  13. 46104100
  14. 52441
  15. 53824
  16. 326041
  17. 494209
  18. 891136
  19. 61009
  20. 35344
  21. 968256
  22. 266256
  23. 255025
  24. 381924
  25. 383161
  26. 51883209
  27. 2082249
  28. 13242321
  29. 21316
  30. 316969
  31. 123201
  32. 248004
  33. 59737441
  34. 13689
  35. 17424
  36. 336400
  37. 7991929
  38. 297025
  39. 14853316
  40. 537289

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