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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 383 · 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. 1.9265² =
  2. 2.149² =
  3. 3.1373² =
  4. 4.460² =
  5. 5.4753² =
  6. 6.166² =
  7. 7.3370² =
  8. 8.5567² =
  9. 9.456² =
  10. 10.956² =
  11. 11.578² =
  12. 12.146² =
  13. 13.325² =
  14. 14.501² =
  15. 15.173² =
  16. 16.786² =
  17. 17.304² =
  18. 18.1929² =
  19. 19.829² =
  20. 20.7489² =
  21. 21.771² =
  22. 22.2535² =
  23. 23.787² =
  24. 24.2497² =
  25. 25.137² =
  26. 26.836² =
  27. 27.3391² =
  28. 28.7180² =
  29. 29.1312² =
  30. 30.999² =
  31. 31.452² =
  32. 32.550² =
  33. 33.584² =
  34. 34.786² =
  35. 35.4907² =
  36. 36.919² =
  37. 37.7318² =
  38. 38.694² =
  39. 39.854² =
  40. 40.427² =

Answer key

  1. 85840225
  2. 22201
  3. 1885129
  4. 211600
  5. 22591009
  6. 27556
  7. 11356900
  8. 30991489
  9. 207936
  10. 913936
  11. 334084
  12. 21316
  13. 105625
  14. 251001
  15. 29929
  16. 617796
  17. 92416
  18. 3721041
  19. 687241
  20. 56085121
  21. 594441
  22. 6426225
  23. 619369
  24. 6235009
  25. 18769
  26. 698896
  27. 11498881
  28. 51552400
  29. 1721344
  30. 998001
  31. 204304
  32. 302500
  33. 341056
  34. 617796
  35. 24078649
  36. 844561
  37. 53553124
  38. 481636
  39. 729316
  40. 182329

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