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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 26 · 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. 1.950² =
  2. 2.834² =
  3. 3.846² =
  4. 4.295² =
  5. 5.313² =
  6. 6.121² =
  7. 7.178² =
  8. 8.131² =
  9. 9.1919² =
  10. 10.382² =
  11. 11.106² =
  12. 12.231² =
  13. 13.521² =
  14. 14.237² =
  15. 15.249² =
  16. 16.8942² =
  17. 17.1769² =
  18. 18.350² =
  19. 19.127² =
  20. 20.8754² =
  21. 21.141² =
  22. 22.9679² =
  23. 23.6968² =
  24. 24.6243² =
  25. 25.333² =
  26. 26.810² =
  27. 27.995² =
  28. 28.889² =
  29. 29.867² =
  30. 30.358² =
  31. 31.288² =
  32. 32.635² =
  33. 33.381² =
  34. 34.2217² =
  35. 35.423² =
  36. 36.231² =
  37. 37.714² =
  38. 38.324² =
  39. 39.1244² =
  40. 40.887² =

Answer key

  1. 902500
  2. 695556
  3. 715716
  4. 87025
  5. 97969
  6. 14641
  7. 31684
  8. 17161
  9. 3682561
  10. 145924
  11. 11236
  12. 53361
  13. 271441
  14. 56169
  15. 62001
  16. 79959364
  17. 3129361
  18. 122500
  19. 16129
  20. 76632516
  21. 19881
  22. 93683041
  23. 48553024
  24. 38975049
  25. 110889
  26. 656100
  27. 990025
  28. 790321
  29. 751689
  30. 128164
  31. 82944
  32. 403225
  33. 145161
  34. 4915089
  35. 178929
  36. 53361
  37. 509796
  38. 104976
  39. 1547536
  40. 786769

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