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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 780 · 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. 1.871² =
  2. 2.8757² =
  3. 3.881² =
  4. 4.830² =
  5. 5.879² =
  6. 6.5986² =
  7. 7.2965² =
  8. 8.379² =
  9. 9.9657² =
  10. 10.5393² =
  11. 11.9460² =
  12. 12.363² =
  13. 13.285² =
  14. 14.971² =
  15. 15.8735² =
  16. 16.443² =
  17. 17.747² =
  18. 18.891² =
  19. 19.294² =
  20. 20.699² =
  21. 21.226² =
  22. 22.292² =
  23. 23.694² =
  24. 24.1840² =
  25. 25.414² =
  26. 26.1592² =
  27. 27.558² =
  28. 28.489² =
  29. 29.286² =
  30. 30.2611² =
  31. 31.429² =
  32. 32.292² =
  33. 33.246² =
  34. 34.991² =
  35. 35.514² =
  36. 36.9645² =
  37. 37.527² =
  38. 38.619² =
  39. 39.642² =
  40. 40.824² =

Answer key

  1. 758641
  2. 76685049
  3. 776161
  4. 688900
  5. 772641
  6. 35832196
  7. 8791225
  8. 143641
  9. 93257649
  10. 29084449
  11. 89491600
  12. 131769
  13. 81225
  14. 942841
  15. 76300225
  16. 196249
  17. 558009
  18. 793881
  19. 86436
  20. 488601
  21. 51076
  22. 85264
  23. 481636
  24. 3385600
  25. 171396
  26. 2534464
  27. 311364
  28. 239121
  29. 81796
  30. 6817321
  31. 184041
  32. 85264
  33. 60516
  34. 982081
  35. 264196
  36. 93026025
  37. 277729
  38. 383161
  39. 412164
  40. 678976

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