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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 700 · 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. 1.756² =
  2. 2.833² =
  3. 3.594² =
  4. 4.801² =
  5. 5.185² =
  6. 6.230² =
  7. 7.257² =
  8. 8.913² =
  9. 9.2402² =
  10. 10.170² =
  11. 11.2148² =
  12. 12.1514² =
  13. 13.700² =
  14. 14.298² =
  15. 15.294² =
  16. 16.582² =
  17. 17.160² =
  18. 18.892² =
  19. 19.582² =
  20. 20.602² =
  21. 21.327² =
  22. 22.150² =
  23. 23.923² =
  24. 24.552² =
  25. 25.202² =
  26. 26.134² =
  27. 27.354² =
  28. 28.8188² =
  29. 29.6815² =
  30. 30.781² =
  31. 31.9406² =
  32. 32.977² =
  33. 33.5089² =
  34. 34.763² =
  35. 35.432² =
  36. 36.8860² =
  37. 37.267² =
  38. 38.5447² =
  39. 39.168² =
  40. 40.824² =

Answer key

  1. 571536
  2. 693889
  3. 352836
  4. 641601
  5. 34225
  6. 52900
  7. 66049
  8. 833569
  9. 5769604
  10. 28900
  11. 4613904
  12. 2292196
  13. 490000
  14. 88804
  15. 86436
  16. 338724
  17. 25600
  18. 795664
  19. 338724
  20. 362404
  21. 106929
  22. 22500
  23. 851929
  24. 304704
  25. 40804
  26. 17956
  27. 125316
  28. 67043344
  29. 46444225
  30. 609961
  31. 88472836
  32. 954529
  33. 25897921
  34. 582169
  35. 186624
  36. 78499600
  37. 71289
  38. 29669809
  39. 28224
  40. 678976

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