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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 677 · 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. 1.139² =
  2. 2.1979² =
  3. 3.722² =
  4. 4.236² =
  5. 5.305² =
  6. 6.8659² =
  7. 7.5654² =
  8. 8.508² =
  9. 9.853² =
  10. 10.509² =
  11. 11.162² =
  12. 12.320² =
  13. 13.863² =
  14. 14.1643² =
  15. 15.776² =
  16. 16.245² =
  17. 17.233² =
  18. 18.160² =
  19. 19.9434² =
  20. 20.152² =
  21. 21.948² =
  22. 22.119² =
  23. 23.8339² =
  24. 24.670² =
  25. 25.7806² =
  26. 26.970² =
  27. 27.416² =
  28. 28.4813² =
  29. 29.820² =
  30. 30.3743² =
  31. 31.955² =
  32. 32.598² =
  33. 33.7989² =
  34. 34.353² =
  35. 35.1854² =
  36. 36.6573² =
  37. 37.668² =
  38. 38.632² =
  39. 39.881² =
  40. 40.577² =

Answer key

  1. 19321
  2. 3916441
  3. 521284
  4. 55696
  5. 93025
  6. 74978281
  7. 31967716
  8. 258064
  9. 727609
  10. 259081
  11. 26244
  12. 102400
  13. 744769
  14. 2699449
  15. 602176
  16. 60025
  17. 54289
  18. 25600
  19. 89000356
  20. 23104
  21. 898704
  22. 14161
  23. 69538921
  24. 448900
  25. 60933636
  26. 940900
  27. 173056
  28. 23164969
  29. 672400
  30. 14010049
  31. 912025
  32. 357604
  33. 63824121
  34. 124609
  35. 3437316
  36. 43204329
  37. 446224
  38. 399424
  39. 776161
  40. 332929

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