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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 962 · 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. 1.944² =
  2. 2.309² =
  3. 3.9971² =
  4. 4.520² =
  5. 5.476² =
  6. 6.221² =
  7. 7.713² =
  8. 8.135² =
  9. 9.686² =
  10. 10.602² =
  11. 11.1083² =
  12. 12.570² =
  13. 13.207² =
  14. 14.9954² =
  15. 15.715² =
  16. 16.752² =
  17. 17.342² =
  18. 18.280² =
  19. 19.766² =
  20. 20.9337² =
  21. 21.257² =
  22. 22.195² =
  23. 23.609² =
  24. 24.958² =
  25. 25.3187² =
  26. 26.7482² =
  27. 27.3954² =
  28. 28.257² =
  29. 29.901² =
  30. 30.608² =
  31. 31.7383² =
  32. 32.470² =
  33. 33.842² =
  34. 34.514² =
  35. 35.350² =
  36. 36.259² =
  37. 37.550² =
  38. 38.2841² =
  39. 39.895² =
  40. 40.875² =

Answer key

  1. 891136
  2. 95481
  3. 99420841
  4. 270400
  5. 226576
  6. 48841
  7. 508369
  8. 18225
  9. 470596
  10. 362404
  11. 1172889
  12. 324900
  13. 42849
  14. 99082116
  15. 511225
  16. 565504
  17. 116964
  18. 78400
  19. 586756
  20. 87179569
  21. 66049
  22. 38025
  23. 370881
  24. 917764
  25. 10156969
  26. 55980324
  27. 15634116
  28. 66049
  29. 811801
  30. 369664
  31. 54508689
  32. 220900
  33. 708964
  34. 264196
  35. 122500
  36. 67081
  37. 302500
  38. 8071281
  39. 801025
  40. 765625

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