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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 300 · 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. 1.581² =
  2. 2.5054² =
  3. 3.211² =
  4. 4.8966² =
  5. 5.651² =
  6. 6.413² =
  7. 7.575² =
  8. 8.922² =
  9. 9.4775² =
  10. 10.154² =
  11. 11.260² =
  12. 12.583² =
  13. 13.697² =
  14. 14.861² =
  15. 15.133² =
  16. 16.268² =
  17. 17.847² =
  18. 18.5824² =
  19. 19.249² =
  20. 20.726² =
  21. 21.198² =
  22. 22.373² =
  23. 23.236² =
  24. 24.575² =
  25. 25.950² =
  26. 26.935² =
  27. 27.206² =
  28. 28.784² =
  29. 29.989² =
  30. 30.7184² =
  31. 31.871² =
  32. 32.625² =
  33. 33.757² =
  34. 34.837² =
  35. 35.286² =
  36. 36.415² =
  37. 37.135² =
  38. 38.747² =
  39. 39.511² =
  40. 40.561² =

Answer key

  1. 337561
  2. 25542916
  3. 44521
  4. 80389156
  5. 423801
  6. 170569
  7. 330625
  8. 850084
  9. 22800625
  10. 23716
  11. 67600
  12. 339889
  13. 485809
  14. 741321
  15. 17689
  16. 71824
  17. 717409
  18. 33918976
  19. 62001
  20. 527076
  21. 39204
  22. 139129
  23. 55696
  24. 330625
  25. 902500
  26. 874225
  27. 42436
  28. 614656
  29. 978121
  30. 51609856
  31. 758641
  32. 390625
  33. 573049
  34. 700569
  35. 81796
  36. 172225
  37. 18225
  38. 558009
  39. 261121
  40. 314721

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