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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 687 · 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. 1.772² =
  2. 2.428² =
  3. 3.9340² =
  4. 4.561² =
  5. 5.807² =
  6. 6.2155² =
  7. 7.134² =
  8. 8.4980² =
  9. 9.6922² =
  10. 10.7616² =
  11. 11.691² =
  12. 12.959² =
  13. 13.923² =
  14. 14.880² =
  15. 15.427² =
  16. 16.166² =
  17. 17.7031² =
  18. 18.5515² =
  19. 19.142² =
  20. 20.989² =
  21. 21.634² =
  22. 22.253² =
  23. 23.346² =
  24. 24.322² =
  25. 25.650² =
  26. 26.883² =
  27. 27.653² =
  28. 28.667² =
  29. 29.1946² =
  30. 30.976² =
  31. 31.662² =
  32. 32.233² =
  33. 33.6274² =
  34. 34.629² =
  35. 35.642² =
  36. 36.831² =
  37. 37.468² =
  38. 38.872² =
  39. 39.692² =
  40. 40.573² =

Answer key

  1. 595984
  2. 183184
  3. 87235600
  4. 314721
  5. 651249
  6. 4644025
  7. 17956
  8. 24800400
  9. 47914084
  10. 58003456
  11. 477481
  12. 919681
  13. 851929
  14. 774400
  15. 182329
  16. 27556
  17. 49434961
  18. 30415225
  19. 20164
  20. 978121
  21. 401956
  22. 64009
  23. 119716
  24. 103684
  25. 422500
  26. 779689
  27. 426409
  28. 444889
  29. 3786916
  30. 952576
  31. 438244
  32. 54289
  33. 39363076
  34. 395641
  35. 412164
  36. 690561
  37. 219024
  38. 760384
  39. 478864
  40. 328329

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