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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 990 · 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. 1.7657² =
  2. 2.577² =
  3. 3.159² =
  4. 4.1409² =
  5. 5.412² =
  6. 6.465² =
  7. 7.128² =
  8. 8.143² =
  9. 9.8874² =
  10. 10.833² =
  11. 11.5981² =
  12. 12.842² =
  13. 13.562² =
  14. 14.2753² =
  15. 15.962² =
  16. 16.102² =
  17. 17.2743² =
  18. 18.613² =
  19. 19.1774² =
  20. 20.864² =
  21. 21.3147² =
  22. 22.199² =
  23. 23.548² =
  24. 24.578² =
  25. 25.365² =
  26. 26.930² =
  27. 27.214² =
  28. 28.231² =
  29. 29.383² =
  30. 30.196² =
  31. 31.672² =
  32. 32.479² =
  33. 33.122² =
  34. 34.220² =
  35. 35.322² =
  36. 36.718² =
  37. 37.830² =
  38. 38.744² =
  39. 39.775² =
  40. 40.210² =

Answer key

  1. 58629649
  2. 332929
  3. 25281
  4. 1985281
  5. 169744
  6. 216225
  7. 16384
  8. 20449
  9. 78747876
  10. 693889
  11. 35772361
  12. 708964
  13. 315844
  14. 7579009
  15. 925444
  16. 10404
  17. 7524049
  18. 375769
  19. 3147076
  20. 746496
  21. 9903609
  22. 39601
  23. 300304
  24. 334084
  25. 133225
  26. 864900
  27. 45796
  28. 53361
  29. 146689
  30. 38416
  31. 451584
  32. 229441
  33. 14884
  34. 48400
  35. 103684
  36. 515524
  37. 688900
  38. 553536
  39. 600625
  40. 44100

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