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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 312 · 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. 1.5141² =
  2. 2.420² =
  3. 3.960² =
  4. 4.346² =
  5. 5.257² =
  6. 6.2297² =
  7. 7.8573² =
  8. 8.777² =
  9. 9.129² =
  10. 10.305² =
  11. 11.622² =
  12. 12.822² =
  13. 13.7036² =
  14. 14.345² =
  15. 15.533² =
  16. 16.295² =
  17. 17.276² =
  18. 18.356² =
  19. 19.678² =
  20. 20.962² =
  21. 21.6619² =
  22. 22.4375² =
  23. 23.337² =
  24. 24.898² =
  25. 25.587² =
  26. 26.186² =
  27. 27.135² =
  28. 28.7074² =
  29. 29.211² =
  30. 30.316² =
  31. 31.7604² =
  32. 32.557² =
  33. 33.765² =
  34. 34.803² =
  35. 35.580² =
  36. 36.3601² =
  37. 37.145² =
  38. 38.125² =
  39. 39.8589² =
  40. 40.270² =

Answer key

  1. 26429881
  2. 176400
  3. 921600
  4. 119716
  5. 66049
  6. 5276209
  7. 73496329
  8. 603729
  9. 16641
  10. 93025
  11. 386884
  12. 675684
  13. 49505296
  14. 119025
  15. 284089
  16. 87025
  17. 76176
  18. 126736
  19. 459684
  20. 925444
  21. 43811161
  22. 19140625
  23. 113569
  24. 806404
  25. 344569
  26. 34596
  27. 18225
  28. 50041476
  29. 44521
  30. 99856
  31. 57820816
  32. 310249
  33. 585225
  34. 644809
  35. 336400
  36. 12967201
  37. 21025
  38. 15625
  39. 73770921
  40. 72900

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