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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 242 · 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. 1.1322² =
  2. 2.4166² =
  3. 3.438² =
  4. 4.8981² =
  5. 5.459² =
  6. 6.514² =
  7. 7.236² =
  8. 8.3176² =
  9. 9.219² =
  10. 10.9312² =
  11. 11.286² =
  12. 12.285² =
  13. 13.667² =
  14. 14.5302² =
  15. 15.479² =
  16. 16.314² =
  17. 17.955² =
  18. 18.1039² =
  19. 19.458² =
  20. 20.400² =
  21. 21.6538² =
  22. 22.268² =
  23. 23.909² =
  24. 24.232² =
  25. 25.546² =
  26. 26.329² =
  27. 27.414² =
  28. 28.8037² =
  29. 29.608² =
  30. 30.778² =
  31. 31.2095² =
  32. 32.927² =
  33. 33.4765² =
  34. 34.8115² =
  35. 35.1008² =
  36. 36.532² =
  37. 37.1564² =
  38. 38.7090² =
  39. 39.766² =
  40. 40.846² =

Answer key

  1. 1747684
  2. 17355556
  3. 191844
  4. 80658361
  5. 210681
  6. 264196
  7. 55696
  8. 10086976
  9. 47961
  10. 86713344
  11. 81796
  12. 81225
  13. 444889
  14. 28111204
  15. 229441
  16. 98596
  17. 912025
  18. 1079521
  19. 209764
  20. 160000
  21. 42745444
  22. 71824
  23. 826281
  24. 53824
  25. 298116
  26. 108241
  27. 171396
  28. 64593369
  29. 369664
  30. 605284
  31. 4389025
  32. 859329
  33. 22705225
  34. 65853225
  35. 1016064
  36. 283024
  37. 2446096
  38. 50268100
  39. 586756
  40. 715716

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