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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 458 · 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. 1.635² =
  2. 2.529² =
  3. 3.317² =
  4. 4.363² =
  5. 5.825² =
  6. 6.4765² =
  7. 7.272² =
  8. 8.831² =
  9. 9.162² =
  10. 10.194² =
  11. 11.614² =
  12. 12.590² =
  13. 13.4989² =
  14. 14.9942² =
  15. 15.942² =
  16. 16.434² =
  17. 17.7940² =
  18. 18.258² =
  19. 19.427² =
  20. 20.6714² =
  21. 21.870² =
  22. 22.472² =
  23. 23.9927² =
  24. 24.673² =
  25. 25.6767² =
  26. 26.795² =
  27. 27.469² =
  28. 28.943² =
  29. 29.240² =
  30. 30.3742² =
  31. 31.5863² =
  32. 32.8090² =
  33. 33.967² =
  34. 34.6447² =
  35. 35.760² =
  36. 36.8098² =
  37. 37.524² =
  38. 38.371² =
  39. 39.1483² =
  40. 40.4995² =

Answer key

  1. 403225
  2. 279841
  3. 100489
  4. 131769
  5. 680625
  6. 22705225
  7. 73984
  8. 690561
  9. 26244
  10. 37636
  11. 376996
  12. 348100
  13. 24890121
  14. 98843364
  15. 887364
  16. 188356
  17. 63043600
  18. 66564
  19. 182329
  20. 45077796
  21. 756900
  22. 222784
  23. 98545329
  24. 452929
  25. 45792289
  26. 632025
  27. 219961
  28. 889249
  29. 57600
  30. 14002564
  31. 34374769
  32. 65448100
  33. 935089
  34. 41563809
  35. 577600
  36. 65577604
  37. 274576
  38. 137641
  39. 2199289
  40. 24950025

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