← Squares of 3- and 4-digit numbers lesson New set →

Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 807 · 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. 1.387² =
  2. 2.431² =
  3. 3.1128² =
  4. 4.460² =
  5. 5.697² =
  6. 6.4415² =
  7. 7.130² =
  8. 8.910² =
  9. 9.5163² =
  10. 10.3505² =
  11. 11.936² =
  12. 12.375² =
  13. 13.305² =
  14. 14.4434² =
  15. 15.932² =
  16. 16.621² =
  17. 17.654² =
  18. 18.737² =
  19. 19.9054² =
  20. 20.1291² =
  21. 21.188² =
  22. 22.1505² =
  23. 23.403² =
  24. 24.7709² =
  25. 25.796² =
  26. 26.9516² =
  27. 27.256² =
  28. 28.250² =
  29. 29.242² =
  30. 30.104² =
  31. 31.744² =
  32. 32.489² =
  33. 33.197² =
  34. 34.257² =
  35. 35.315² =
  36. 36.8288² =
  37. 37.734² =
  38. 38.793² =
  39. 39.258² =
  40. 40.8705² =

Answer key

  1. 149769
  2. 185761
  3. 1272384
  4. 211600
  5. 485809
  6. 19492225
  7. 16900
  8. 828100
  9. 26656569
  10. 12285025
  11. 876096
  12. 140625
  13. 93025
  14. 19660356
  15. 868624
  16. 385641
  17. 427716
  18. 543169
  19. 81974916
  20. 1666681
  21. 35344
  22. 2265025
  23. 162409
  24. 59428681
  25. 633616
  26. 90554256
  27. 65536
  28. 62500
  29. 58564
  30. 10816
  31. 553536
  32. 239121
  33. 38809
  34. 66049
  35. 99225
  36. 68690944
  37. 538756
  38. 628849
  39. 66564
  40. 75777025

Free vedic maths lessons, practice and worksheets at talentjr.in/vedic-maths