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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 777 · 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. 1.245² =
  2. 2.913² =
  3. 3.706² =
  4. 4.434² =
  5. 5.414² =
  6. 6.973² =
  7. 7.760² =
  8. 8.734² =
  9. 9.216² =
  10. 10.300² =
  11. 11.4652² =
  12. 12.535² =
  13. 13.8125² =
  14. 14.747² =
  15. 15.694² =
  16. 16.977² =
  17. 17.715² =
  18. 18.180² =
  19. 19.621² =
  20. 20.941² =
  21. 21.438² =
  22. 22.498² =
  23. 23.355² =
  24. 24.8507² =
  25. 25.918² =
  26. 26.582² =
  27. 27.2544² =
  28. 28.5283² =
  29. 29.234² =
  30. 30.9757² =
  31. 31.128² =
  32. 32.250² =
  33. 33.796² =
  34. 34.864² =
  35. 35.9622² =
  36. 36.521² =
  37. 37.355² =
  38. 38.503² =
  39. 39.456² =
  40. 40.806² =

Answer key

  1. 60025
  2. 833569
  3. 498436
  4. 188356
  5. 171396
  6. 946729
  7. 577600
  8. 538756
  9. 46656
  10. 90000
  11. 21641104
  12. 286225
  13. 66015625
  14. 558009
  15. 481636
  16. 954529
  17. 511225
  18. 32400
  19. 385641
  20. 885481
  21. 191844
  22. 248004
  23. 126025
  24. 72369049
  25. 842724
  26. 338724
  27. 6471936
  28. 27910089
  29. 54756
  30. 95199049
  31. 16384
  32. 62500
  33. 633616
  34. 746496
  35. 92582884
  36. 271441
  37. 126025
  38. 253009
  39. 207936
  40. 649636

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