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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 95 · 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. 1.424² =
  2. 2.5326² =
  3. 3.482² =
  4. 4.173² =
  5. 5.692² =
  6. 6.420² =
  7. 7.119² =
  8. 8.252² =
  9. 9.146² =
  10. 10.893² =
  11. 11.408² =
  12. 12.482² =
  13. 13.664² =
  14. 14.229² =
  15. 15.984² =
  16. 16.401² =
  17. 17.300² =
  18. 18.154² =
  19. 19.141² =
  20. 20.7872² =
  21. 21.133² =
  22. 22.547² =
  23. 23.996² =
  24. 24.849² =
  25. 25.501² =
  26. 26.781² =
  27. 27.339² =
  28. 28.8068² =
  29. 29.433² =
  30. 30.761² =
  31. 31.637² =
  32. 32.604² =
  33. 33.117² =
  34. 34.608² =
  35. 35.636² =
  36. 36.4494² =
  37. 37.643² =
  38. 38.184² =
  39. 39.815² =
  40. 40.783² =

Answer key

  1. 179776
  2. 28366276
  3. 232324
  4. 29929
  5. 478864
  6. 176400
  7. 14161
  8. 63504
  9. 21316
  10. 797449
  11. 166464
  12. 232324
  13. 440896
  14. 52441
  15. 968256
  16. 160801
  17. 90000
  18. 23716
  19. 19881
  20. 61968384
  21. 17689
  22. 299209
  23. 992016
  24. 720801
  25. 251001
  26. 609961
  27. 114921
  28. 65092624
  29. 187489
  30. 579121
  31. 405769
  32. 364816
  33. 13689
  34. 369664
  35. 404496
  36. 20196036
  37. 413449
  38. 33856
  39. 664225
  40. 613089

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