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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 679 · 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. 1.398² =
  2. 2.7875² =
  3. 3.254² =
  4. 4.5957² =
  5. 5.939² =
  6. 6.1845² =
  7. 7.683² =
  8. 8.105² =
  9. 9.378² =
  10. 10.413² =
  11. 11.717² =
  12. 12.694² =
  13. 13.653² =
  14. 14.161² =
  15. 15.302² =
  16. 16.379² =
  17. 17.9966² =
  18. 18.7331² =
  19. 19.842² =
  20. 20.764² =
  21. 21.615² =
  22. 22.789² =
  23. 23.9915² =
  24. 24.6546² =
  25. 25.1892² =
  26. 26.6240² =
  27. 27.496² =
  28. 28.601² =
  29. 29.1822² =
  30. 30.148² =
  31. 31.788² =
  32. 32.657² =
  33. 33.889² =
  34. 34.162² =
  35. 35.652² =
  36. 36.525² =
  37. 37.387² =
  38. 38.3686² =
  39. 39.146² =
  40. 40.541² =

Answer key

  1. 158404
  2. 62015625
  3. 64516
  4. 35485849
  5. 881721
  6. 3404025
  7. 466489
  8. 11025
  9. 142884
  10. 170569
  11. 514089
  12. 481636
  13. 426409
  14. 25921
  15. 91204
  16. 143641
  17. 99321156
  18. 53743561
  19. 708964
  20. 583696
  21. 378225
  22. 622521
  23. 98307225
  24. 42850116
  25. 3579664
  26. 38937600
  27. 246016
  28. 361201
  29. 3319684
  30. 21904
  31. 620944
  32. 431649
  33. 790321
  34. 26244
  35. 425104
  36. 275625
  37. 149769
  38. 13586596
  39. 21316
  40. 292681

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