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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 536 · 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. 1.303² =
  2. 2.434² =
  3. 3.736² =
  4. 4.212² =
  5. 5.4224² =
  6. 6.135² =
  7. 7.313² =
  8. 8.7454² =
  9. 9.5869² =
  10. 10.325² =
  11. 11.8591² =
  12. 12.5949² =
  13. 13.1259² =
  14. 14.2142² =
  15. 15.535² =
  16. 16.572² =
  17. 17.198² =
  18. 18.458² =
  19. 19.1949² =
  20. 20.880² =
  21. 21.8566² =
  22. 22.8098² =
  23. 23.9433² =
  24. 24.2308² =
  25. 25.233² =
  26. 26.388² =
  27. 27.360² =
  28. 28.603² =
  29. 29.440² =
  30. 30.167² =
  31. 31.284² =
  32. 32.188² =
  33. 33.7647² =
  34. 34.220² =
  35. 35.2283² =
  36. 36.2248² =
  37. 37.720² =
  38. 38.433² =
  39. 39.988² =
  40. 40.260² =

Answer key

  1. 91809
  2. 188356
  3. 541696
  4. 44944
  5. 17842176
  6. 18225
  7. 97969
  8. 55562116
  9. 34445161
  10. 105625
  11. 73805281
  12. 35390601
  13. 1585081
  14. 4588164
  15. 286225
  16. 327184
  17. 39204
  18. 209764
  19. 3798601
  20. 774400
  21. 73376356
  22. 65577604
  23. 88981489
  24. 5326864
  25. 54289
  26. 150544
  27. 129600
  28. 363609
  29. 193600
  30. 27889
  31. 80656
  32. 35344
  33. 58476609
  34. 48400
  35. 5212089
  36. 5053504
  37. 518400
  38. 187489
  39. 976144
  40. 67600

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