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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 406 · 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. 1.981² =
  2. 2.454² =
  3. 3.5688² =
  4. 4.574² =
  5. 5.208² =
  6. 6.9092² =
  7. 7.282² =
  8. 8.260² =
  9. 9.545² =
  10. 10.5556² =
  11. 11.6489² =
  12. 12.494² =
  13. 13.5000² =
  14. 14.9161² =
  15. 15.955² =
  16. 16.876² =
  17. 17.8171² =
  18. 18.458² =
  19. 19.314² =
  20. 20.424² =
  21. 21.2603² =
  22. 22.120² =
  23. 23.2632² =
  24. 24.683² =
  25. 25.667² =
  26. 26.900² =
  27. 27.755² =
  28. 28.9399² =
  29. 29.244² =
  30. 30.837² =
  31. 31.7075² =
  32. 32.8931² =
  33. 33.785² =
  34. 34.521² =
  35. 35.264² =
  36. 36.250² =
  37. 37.4144² =
  38. 38.146² =
  39. 39.823² =
  40. 40.3633² =

Answer key

  1. 962361
  2. 206116
  3. 32353344
  4. 329476
  5. 43264
  6. 82664464
  7. 79524
  8. 67600
  9. 297025
  10. 30869136
  11. 42107121
  12. 244036
  13. 25000000
  14. 83923921
  15. 912025
  16. 767376
  17. 66765241
  18. 209764
  19. 98596
  20. 179776
  21. 6775609
  22. 14400
  23. 6927424
  24. 466489
  25. 444889
  26. 810000
  27. 570025
  28. 88341201
  29. 59536
  30. 700569
  31. 50055625
  32. 79762761
  33. 616225
  34. 271441
  35. 69696
  36. 62500
  37. 17172736
  38. 21316
  39. 677329
  40. 13198689

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