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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 24 · 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. 1.8031² =
  2. 2.3135² =
  3. 3.5901² =
  4. 4.889² =
  5. 5.359² =
  6. 6.197² =
  7. 7.549² =
  8. 8.845² =
  9. 9.932² =
  10. 10.548² =
  11. 11.726² =
  12. 12.524² =
  13. 13.6580² =
  14. 14.2960² =
  15. 15.142² =
  16. 16.349² =
  17. 17.154² =
  18. 18.432² =
  19. 19.133² =
  20. 20.7329² =
  21. 21.853² =
  22. 22.696² =
  23. 23.7874² =
  24. 24.1592² =
  25. 25.882² =
  26. 26.485² =
  27. 27.948² =
  28. 28.177² =
  29. 29.406² =
  30. 30.2978² =
  31. 31.875² =
  32. 32.6659² =
  33. 33.611² =
  34. 34.258² =
  35. 35.1676² =
  36. 36.539² =
  37. 37.194² =
  38. 38.857² =
  39. 39.207² =
  40. 40.910² =

Answer key

  1. 64496961
  2. 9828225
  3. 34821801
  4. 790321
  5. 128881
  6. 38809
  7. 301401
  8. 714025
  9. 868624
  10. 300304
  11. 527076
  12. 274576
  13. 43296400
  14. 8761600
  15. 20164
  16. 121801
  17. 23716
  18. 186624
  19. 17689
  20. 53714241
  21. 727609
  22. 484416
  23. 61999876
  24. 2534464
  25. 777924
  26. 235225
  27. 898704
  28. 31329
  29. 164836
  30. 8868484
  31. 765625
  32. 44342281
  33. 373321
  34. 66564
  35. 2808976
  36. 290521
  37. 37636
  38. 734449
  39. 42849
  40. 828100

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