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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 126 · 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. 1.801² =
  2. 2.331² =
  3. 3.554² =
  4. 4.486² =
  5. 5.133² =
  6. 6.316² =
  7. 7.3287² =
  8. 8.571² =
  9. 9.403² =
  10. 10.637² =
  11. 11.866² =
  12. 12.198² =
  13. 13.229² =
  14. 14.9801² =
  15. 15.973² =
  16. 16.727² =
  17. 17.130² =
  18. 18.342² =
  19. 19.502² =
  20. 20.570² =
  21. 21.736² =
  22. 22.475² =
  23. 23.403² =
  24. 24.995² =
  25. 25.399² =
  26. 26.773² =
  27. 27.736² =
  28. 28.7564² =
  29. 29.8858² =
  30. 30.6859² =
  31. 31.8713² =
  32. 32.6120² =
  33. 33.470² =
  34. 34.3515² =
  35. 35.114² =
  36. 36.1550² =
  37. 37.3990² =
  38. 38.9911² =
  39. 39.4044² =
  40. 40.2889² =

Answer key

  1. 641601
  2. 109561
  3. 306916
  4. 236196
  5. 17689
  6. 99856
  7. 10804369
  8. 326041
  9. 162409
  10. 405769
  11. 749956
  12. 39204
  13. 52441
  14. 96059601
  15. 946729
  16. 528529
  17. 16900
  18. 116964
  19. 252004
  20. 324900
  21. 541696
  22. 225625
  23. 162409
  24. 990025
  25. 159201
  26. 597529
  27. 541696
  28. 57214096
  29. 78464164
  30. 47045881
  31. 75916369
  32. 37454400
  33. 220900
  34. 12355225
  35. 12996
  36. 2402500
  37. 15920100
  38. 98227921
  39. 16353936
  40. 8346321

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