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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 878 · 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. 1.942² =
  2. 2.652² =
  3. 3.783² =
  4. 4.8305² =
  5. 5.8711² =
  6. 6.4021² =
  7. 7.214² =
  8. 8.677² =
  9. 9.792² =
  10. 10.339² =
  11. 11.1222² =
  12. 12.6309² =
  13. 13.940² =
  14. 14.708² =
  15. 15.8299² =
  16. 16.875² =
  17. 17.133² =
  18. 18.835² =
  19. 19.7267² =
  20. 20.670² =
  21. 21.772² =
  22. 22.2347² =
  23. 23.758² =
  24. 24.9820² =
  25. 25.6975² =
  26. 26.4834² =
  27. 27.136² =
  28. 28.3754² =
  29. 29.941² =
  30. 30.191² =
  31. 31.8982² =
  32. 32.902² =
  33. 33.493² =
  34. 34.132² =
  35. 35.385² =
  36. 36.136² =
  37. 37.158² =
  38. 38.493² =
  39. 39.428² =
  40. 40.201² =

Answer key

  1. 887364
  2. 425104
  3. 613089
  4. 68973025
  5. 75881521
  6. 16168441
  7. 45796
  8. 458329
  9. 627264
  10. 114921
  11. 1493284
  12. 39803481
  13. 883600
  14. 501264
  15. 68873401
  16. 765625
  17. 17689
  18. 697225
  19. 52809289
  20. 448900
  21. 595984
  22. 5508409
  23. 574564
  24. 96432400
  25. 48650625
  26. 23367556
  27. 18496
  28. 14092516
  29. 885481
  30. 36481
  31. 80676324
  32. 813604
  33. 243049
  34. 17424
  35. 148225
  36. 18496
  37. 24964
  38. 243049
  39. 183184
  40. 40401

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