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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 106 · 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. 1.174² =
  2. 2.557² =
  3. 3.7493² =
  4. 4.149² =
  5. 5.9849² =
  6. 6.5871² =
  7. 7.379² =
  8. 8.6480² =
  9. 9.903² =
  10. 10.405² =
  11. 11.9561² =
  12. 12.746² =
  13. 13.786² =
  14. 14.551² =
  15. 15.5939² =
  16. 16.944² =
  17. 17.447² =
  18. 18.133² =
  19. 19.876² =
  20. 20.2600² =
  21. 21.628² =
  22. 22.597² =
  23. 23.3553² =
  24. 24.157² =
  25. 25.892² =
  26. 26.175² =
  27. 27.8501² =
  28. 28.239² =
  29. 29.2347² =
  30. 30.5262² =
  31. 31.4411² =
  32. 32.302² =
  33. 33.8784² =
  34. 34.7368² =
  35. 35.661² =
  36. 36.871² =
  37. 37.8923² =
  38. 38.999² =
  39. 39.5267² =
  40. 40.4246² =

Answer key

  1. 30276
  2. 310249
  3. 56145049
  4. 22201
  5. 97002801
  6. 34468641
  7. 143641
  8. 41990400
  9. 815409
  10. 164025
  11. 91412721
  12. 556516
  13. 617796
  14. 303601
  15. 35271721
  16. 891136
  17. 199809
  18. 17689
  19. 767376
  20. 6760000
  21. 394384
  22. 356409
  23. 12623809
  24. 24649
  25. 795664
  26. 30625
  27. 72267001
  28. 57121
  29. 5508409
  30. 27688644
  31. 19456921
  32. 91204
  33. 77158656
  34. 54287424
  35. 436921
  36. 758641
  37. 79619929
  38. 998001
  39. 27741289
  40. 18028516

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