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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 148 · 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. 1.3699² =
  2. 2.656² =
  3. 3.612² =
  4. 4.7635² =
  5. 5.6431² =
  6. 6.661² =
  7. 7.1623² =
  8. 8.253² =
  9. 9.7061² =
  10. 10.359² =
  11. 11.756² =
  12. 12.7690² =
  13. 13.2750² =
  14. 14.575² =
  15. 15.661² =
  16. 16.164² =
  17. 17.269² =
  18. 18.941² =
  19. 19.2641² =
  20. 20.9868² =
  21. 21.230² =
  22. 22.534² =
  23. 23.429² =
  24. 24.632² =
  25. 25.901² =
  26. 26.171² =
  27. 27.686² =
  28. 28.948² =
  29. 29.336² =
  30. 30.1556² =
  31. 31.850² =
  32. 32.569² =
  33. 33.485² =
  34. 34.813² =
  35. 35.284² =
  36. 36.3288² =
  37. 37.496² =
  38. 38.157² =
  39. 39.3678² =
  40. 40.831² =

Answer key

  1. 13682601
  2. 430336
  3. 374544
  4. 58293225
  5. 41357761
  6. 436921
  7. 2634129
  8. 64009
  9. 49857721
  10. 128881
  11. 571536
  12. 59136100
  13. 7562500
  14. 330625
  15. 436921
  16. 26896
  17. 72361
  18. 885481
  19. 6974881
  20. 97377424
  21. 52900
  22. 285156
  23. 184041
  24. 399424
  25. 811801
  26. 29241
  27. 470596
  28. 898704
  29. 112896
  30. 2421136
  31. 722500
  32. 323761
  33. 235225
  34. 660969
  35. 80656
  36. 10810944
  37. 246016
  38. 24649
  39. 13527684
  40. 690561

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