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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 959 · 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. 1.6528² =
  2. 2.211² =
  3. 3.358² =
  4. 4.768² =
  5. 5.4080² =
  6. 6.714² =
  7. 7.471² =
  8. 8.1279² =
  9. 9.2782² =
  10. 10.655² =
  11. 11.898² =
  12. 12.121² =
  13. 13.983² =
  14. 14.944² =
  15. 15.3201² =
  16. 16.8287² =
  17. 17.926² =
  18. 18.925² =
  19. 19.5605² =
  20. 20.647² =
  21. 21.968² =
  22. 22.9936² =
  23. 23.274² =
  24. 24.1976² =
  25. 25.179² =
  26. 26.189² =
  27. 27.8287² =
  28. 28.744² =
  29. 29.342² =
  30. 30.795² =
  31. 31.359² =
  32. 32.806² =
  33. 33.733² =
  34. 34.9064² =
  35. 35.6445² =
  36. 36.925² =
  37. 37.846² =
  38. 38.1344² =
  39. 39.2608² =
  40. 40.328² =

Answer key

  1. 42614784
  2. 44521
  3. 128164
  4. 589824
  5. 16646400
  6. 509796
  7. 221841
  8. 1635841
  9. 7739524
  10. 429025
  11. 806404
  12. 14641
  13. 966289
  14. 891136
  15. 10246401
  16. 68674369
  17. 857476
  18. 855625
  19. 31416025
  20. 418609
  21. 937024
  22. 98724096
  23. 75076
  24. 3904576
  25. 32041
  26. 35721
  27. 68674369
  28. 553536
  29. 116964
  30. 632025
  31. 128881
  32. 649636
  33. 537289
  34. 82156096
  35. 41538025
  36. 855625
  37. 715716
  38. 1806336
  39. 6801664
  40. 107584

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