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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 531 · 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. 1.312² =
  2. 2.614² =
  3. 3.937² =
  4. 4.253² =
  5. 5.763² =
  6. 6.1979² =
  7. 7.887² =
  8. 8.878² =
  9. 9.839² =
  10. 10.965² =
  11. 11.938² =
  12. 12.451² =
  13. 13.871² =
  14. 14.4695² =
  15. 15.973² =
  16. 16.845² =
  17. 17.6171² =
  18. 18.560² =
  19. 19.5234² =
  20. 20.311² =
  21. 21.931² =
  22. 22.312² =
  23. 23.2839² =
  24. 24.195² =
  25. 25.418² =
  26. 26.207² =
  27. 27.450² =
  28. 28.977² =
  29. 29.242² =
  30. 30.1171² =
  31. 31.761² =
  32. 32.9313² =
  33. 33.810² =
  34. 34.830² =
  35. 35.809² =
  36. 36.3672² =
  37. 37.165² =
  38. 38.789² =
  39. 39.868² =
  40. 40.1096² =

Answer key

  1. 97344
  2. 376996
  3. 877969
  4. 64009
  5. 582169
  6. 3916441
  7. 786769
  8. 770884
  9. 703921
  10. 931225
  11. 879844
  12. 203401
  13. 758641
  14. 22043025
  15. 946729
  16. 714025
  17. 38081241
  18. 313600
  19. 27394756
  20. 96721
  21. 866761
  22. 97344
  23. 8059921
  24. 38025
  25. 174724
  26. 42849
  27. 202500
  28. 954529
  29. 58564
  30. 1371241
  31. 579121
  32. 86731969
  33. 656100
  34. 688900
  35. 654481
  36. 13483584
  37. 27225
  38. 622521
  39. 753424
  40. 1201216

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