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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 352 · 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. 1.161² =
  2. 2.263² =
  3. 3.7338² =
  4. 4.240² =
  5. 5.2432² =
  6. 6.729² =
  7. 7.119² =
  8. 8.468² =
  9. 9.397² =
  10. 10.395² =
  11. 11.929² =
  12. 12.869² =
  13. 13.391² =
  14. 14.8070² =
  15. 15.354² =
  16. 16.2059² =
  17. 17.1505² =
  18. 18.752² =
  19. 19.359² =
  20. 20.991² =
  21. 21.336² =
  22. 22.827² =
  23. 23.672² =
  24. 24.6292² =
  25. 25.922² =
  26. 26.794² =
  27. 27.1193² =
  28. 28.565² =
  29. 29.919² =
  30. 30.557² =
  31. 31.468² =
  32. 32.1704² =
  33. 33.253² =
  34. 34.122² =
  35. 35.575² =
  36. 36.630² =
  37. 37.8985² =
  38. 38.882² =
  39. 39.765² =
  40. 40.884² =

Answer key

  1. 25921
  2. 69169
  3. 53846244
  4. 57600
  5. 5914624
  6. 531441
  7. 14161
  8. 219024
  9. 157609
  10. 156025
  11. 863041
  12. 755161
  13. 152881
  14. 65124900
  15. 125316
  16. 4239481
  17. 2265025
  18. 565504
  19. 128881
  20. 982081
  21. 112896
  22. 683929
  23. 451584
  24. 39589264
  25. 850084
  26. 630436
  27. 1423249
  28. 319225
  29. 844561
  30. 310249
  31. 219024
  32. 2903616
  33. 64009
  34. 14884
  35. 330625
  36. 396900
  37. 80730225
  38. 777924
  39. 585225
  40. 781456

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