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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 339 · 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. 1.6364² =
  2. 2.621² =
  3. 3.816² =
  4. 4.7919² =
  5. 5.178² =
  6. 6.321² =
  7. 7.8819² =
  8. 8.257² =
  9. 9.114² =
  10. 10.817² =
  11. 11.525² =
  12. 12.434² =
  13. 13.391² =
  14. 14.4790² =
  15. 15.914² =
  16. 16.4940² =
  17. 17.304² =
  18. 18.618² =
  19. 19.919² =
  20. 20.8724² =
  21. 21.1229² =
  22. 22.986² =
  23. 23.379² =
  24. 24.4140² =
  25. 25.8213² =
  26. 26.912² =
  27. 27.659² =
  28. 28.989² =
  29. 29.800² =
  30. 30.5123² =
  31. 31.660² =
  32. 32.753² =
  33. 33.659² =
  34. 34.154² =
  35. 35.3071² =
  36. 36.611² =
  37. 37.1202² =
  38. 38.222² =
  39. 39.2411² =
  40. 40.386² =

Answer key

  1. 40500496
  2. 385641
  3. 665856
  4. 62710561
  5. 31684
  6. 103041
  7. 77774761
  8. 66049
  9. 12996
  10. 667489
  11. 275625
  12. 188356
  13. 152881
  14. 22944100
  15. 835396
  16. 24403600
  17. 92416
  18. 381924
  19. 844561
  20. 76108176
  21. 1510441
  22. 972196
  23. 143641
  24. 17139600
  25. 67453369
  26. 831744
  27. 434281
  28. 978121
  29. 640000
  30. 26245129
  31. 435600
  32. 567009
  33. 434281
  34. 23716
  35. 9431041
  36. 373321
  37. 1444804
  38. 49284
  39. 5812921
  40. 148996

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