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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 121 · 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. 1.132² =
  2. 2.2639² =
  3. 3.248² =
  4. 4.525² =
  5. 5.9648² =
  6. 6.950² =
  7. 7.880² =
  8. 8.2462² =
  9. 9.283² =
  10. 10.380² =
  11. 11.276² =
  12. 12.278² =
  13. 13.116² =
  14. 14.105² =
  15. 15.652² =
  16. 16.206² =
  17. 17.9119² =
  18. 18.550² =
  19. 19.6616² =
  20. 20.846² =
  21. 21.306² =
  22. 22.616² =
  23. 23.766² =
  24. 24.3542² =
  25. 25.268² =
  26. 26.7807² =
  27. 27.899² =
  28. 28.197² =
  29. 29.708² =
  30. 30.502² =
  31. 31.498² =
  32. 32.267² =
  33. 33.228² =
  34. 34.854² =
  35. 35.490² =
  36. 36.332² =
  37. 37.4146² =
  38. 38.7366² =
  39. 39.9438² =
  40. 40.675² =

Answer key

  1. 17424
  2. 6964321
  3. 61504
  4. 275625
  5. 93083904
  6. 902500
  7. 774400
  8. 6061444
  9. 80089
  10. 144400
  11. 76176
  12. 77284
  13. 13456
  14. 11025
  15. 425104
  16. 42436
  17. 83156161
  18. 302500
  19. 43771456
  20. 715716
  21. 93636
  22. 379456
  23. 586756
  24. 12545764
  25. 71824
  26. 60949249
  27. 808201
  28. 38809
  29. 501264
  30. 252004
  31. 248004
  32. 71289
  33. 51984
  34. 729316
  35. 240100
  36. 110224
  37. 17189316
  38. 54257956
  39. 89075844
  40. 455625

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