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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 839 · 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. 1.341² =
  2. 2.879² =
  3. 3.7216² =
  4. 4.2715² =
  5. 5.295² =
  6. 6.966² =
  7. 7.622² =
  8. 8.6305² =
  9. 9.8243² =
  10. 10.5524² =
  11. 11.319² =
  12. 12.3039² =
  13. 13.970² =
  14. 14.6629² =
  15. 15.968² =
  16. 16.3328² =
  17. 17.252² =
  18. 18.1553² =
  19. 19.978² =
  20. 20.5186² =
  21. 21.750² =
  22. 22.771² =
  23. 23.262² =
  24. 24.111² =
  25. 25.747² =
  26. 26.404² =
  27. 27.8908² =
  28. 28.925² =
  29. 29.265² =
  30. 30.241² =
  31. 31.150² =
  32. 32.9463² =
  33. 33.1244² =
  34. 34.313² =
  35. 35.639² =
  36. 36.495² =
  37. 37.214² =
  38. 38.2111² =
  39. 39.932² =
  40. 40.2534² =

Answer key

  1. 116281
  2. 772641
  3. 52070656
  4. 7371225
  5. 87025
  6. 933156
  7. 386884
  8. 39753025
  9. 67947049
  10. 30514576
  11. 101761
  12. 9235521
  13. 940900
  14. 43943641
  15. 937024
  16. 11075584
  17. 63504
  18. 2411809
  19. 956484
  20. 26894596
  21. 562500
  22. 594441
  23. 68644
  24. 12321
  25. 558009
  26. 163216
  27. 79352464
  28. 855625
  29. 70225
  30. 58081
  31. 22500
  32. 89548369
  33. 1547536
  34. 97969
  35. 408321
  36. 245025
  37. 45796
  38. 4456321
  39. 868624
  40. 6421156

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