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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 19 · 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. 1.4305² =
  2. 2.9119² =
  3. 3.4839² =
  4. 4.322² =
  5. 5.1602² =
  6. 6.311² =
  7. 7.329² =
  8. 8.9450² =
  9. 9.298² =
  10. 10.3274² =
  11. 11.752² =
  12. 12.420² =
  13. 13.358² =
  14. 14.177² =
  15. 15.319² =
  16. 16.146² =
  17. 17.831² =
  18. 18.258² =
  19. 19.6658² =
  20. 20.8295² =
  21. 21.207² =
  22. 22.339² =
  23. 23.218² =
  24. 24.381² =
  25. 25.941² =
  26. 26.4413² =
  27. 27.8803² =
  28. 28.163² =
  29. 29.489² =
  30. 30.660² =
  31. 31.9255² =
  32. 32.409² =
  33. 33.373² =
  34. 34.6813² =
  35. 35.6863² =
  36. 36.2125² =
  37. 37.367² =
  38. 38.598² =
  39. 39.727² =
  40. 40.959² =

Answer key

  1. 18533025
  2. 83156161
  3. 23415921
  4. 103684
  5. 2566404
  6. 96721
  7. 108241
  8. 89302500
  9. 88804
  10. 10719076
  11. 565504
  12. 176400
  13. 128164
  14. 31329
  15. 101761
  16. 21316
  17. 690561
  18. 66564
  19. 44328964
  20. 68807025
  21. 42849
  22. 114921
  23. 47524
  24. 145161
  25. 885481
  26. 19474569
  27. 77492809
  28. 26569
  29. 239121
  30. 435600
  31. 85655025
  32. 167281
  33. 139129
  34. 46416969
  35. 47100769
  36. 4515625
  37. 134689
  38. 357604
  39. 528529
  40. 919681

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