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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 474 · 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. 1.235² =
  2. 2.919² =
  3. 3.108² =
  4. 4.521² =
  5. 5.886² =
  6. 6.526² =
  7. 7.146² =
  8. 8.439² =
  9. 9.245² =
  10. 10.429² =
  11. 11.4210² =
  12. 12.765² =
  13. 13.605² =
  14. 14.888² =
  15. 15.2557² =
  16. 16.368² =
  17. 17.599² =
  18. 18.187² =
  19. 19.882² =
  20. 20.510² =
  21. 21.158² =
  22. 22.672² =
  23. 23.287² =
  24. 24.8950² =
  25. 25.698² =
  26. 26.8628² =
  27. 27.837² =
  28. 28.496² =
  29. 29.8300² =
  30. 30.548² =
  31. 31.687² =
  32. 32.2023² =
  33. 33.164² =
  34. 34.876² =
  35. 35.945² =
  36. 36.214² =
  37. 37.242² =
  38. 38.7306² =
  39. 39.4587² =
  40. 40.306² =

Answer key

  1. 55225
  2. 844561
  3. 11664
  4. 271441
  5. 784996
  6. 276676
  7. 21316
  8. 192721
  9. 60025
  10. 184041
  11. 17724100
  12. 585225
  13. 366025
  14. 788544
  15. 6538249
  16. 135424
  17. 358801
  18. 34969
  19. 777924
  20. 260100
  21. 24964
  22. 451584
  23. 82369
  24. 80102500
  25. 487204
  26. 74442384
  27. 700569
  28. 246016
  29. 68890000
  30. 300304
  31. 471969
  32. 4092529
  33. 26896
  34. 767376
  35. 893025
  36. 45796
  37. 58564
  38. 53377636
  39. 21040569
  40. 93636

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