← 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 681 · 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. 1.7310² =
  2. 2.549² =
  3. 3.2512² =
  4. 4.811² =
  5. 5.470² =
  6. 6.828² =
  7. 7.531² =
  8. 8.7392² =
  9. 9.160² =
  10. 10.1778² =
  11. 11.810² =
  12. 12.175² =
  13. 13.878² =
  14. 14.8494² =
  15. 15.689² =
  16. 16.317² =
  17. 17.209² =
  18. 18.8140² =
  19. 19.3903² =
  20. 20.228² =
  21. 21.963² =
  22. 22.1922² =
  23. 23.199² =
  24. 24.181² =
  25. 25.517² =
  26. 26.6777² =
  27. 27.4111² =
  28. 28.4566² =
  29. 29.7194² =
  30. 30.188² =
  31. 31.9964² =
  32. 32.618² =
  33. 33.611² =
  34. 34.240² =
  35. 35.310² =
  36. 36.8826² =
  37. 37.3498² =
  38. 38.573² =
  39. 39.8178² =
  40. 40.286² =

Answer key

  1. 53436100
  2. 301401
  3. 6310144
  4. 657721
  5. 220900
  6. 685584
  7. 281961
  8. 54641664
  9. 25600
  10. 3161284
  11. 656100
  12. 30625
  13. 770884
  14. 72148036
  15. 474721
  16. 100489
  17. 43681
  18. 66259600
  19. 15233409
  20. 51984
  21. 927369
  22. 3694084
  23. 39601
  24. 32761
  25. 267289
  26. 45927729
  27. 16900321
  28. 20848356
  29. 51753636
  30. 35344
  31. 99281296
  32. 381924
  33. 373321
  34. 57600
  35. 96100
  36. 77898276
  37. 12236004
  38. 328329
  39. 66879684
  40. 81796

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