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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 384 · 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. 1.145² =
  2. 2.267² =
  3. 3.6376² =
  4. 4.412² =
  5. 5.4372² =
  6. 6.234² =
  7. 7.196² =
  8. 8.223² =
  9. 9.575² =
  10. 10.654² =
  11. 11.921² =
  12. 12.425² =
  13. 13.2301² =
  14. 14.157² =
  15. 15.587² =
  16. 16.8602² =
  17. 17.273² =
  18. 18.722² =
  19. 19.739² =
  20. 20.435² =
  21. 21.5258² =
  22. 22.460² =
  23. 23.8853² =
  24. 24.466² =
  25. 25.5123² =
  26. 26.316² =
  27. 27.7658² =
  28. 28.418² =
  29. 29.3397² =
  30. 30.702² =
  31. 31.979² =
  32. 32.365² =
  33. 33.385² =
  34. 34.981² =
  35. 35.7186² =
  36. 36.3023² =
  37. 37.499² =
  38. 38.6959² =
  39. 39.912² =
  40. 40.872² =

Answer key

  1. 21025
  2. 71289
  3. 40653376
  4. 169744
  5. 19114384
  6. 54756
  7. 38416
  8. 49729
  9. 330625
  10. 427716
  11. 848241
  12. 180625
  13. 5294601
  14. 24649
  15. 344569
  16. 73994404
  17. 74529
  18. 521284
  19. 546121
  20. 189225
  21. 27646564
  22. 211600
  23. 78375609
  24. 217156
  25. 26245129
  26. 99856
  27. 58644964
  28. 174724
  29. 11539609
  30. 492804
  31. 958441
  32. 133225
  33. 148225
  34. 962361
  35. 51638596
  36. 9138529
  37. 249001
  38. 48427681
  39. 831744
  40. 760384

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