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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 784 · 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. 1.5777² =
  2. 2.6455² =
  3. 3.5847² =
  4. 4.1788² =
  5. 5.163² =
  6. 6.190² =
  7. 7.595² =
  8. 8.1867² =
  9. 9.248² =
  10. 10.854² =
  11. 11.997² =
  12. 12.670² =
  13. 13.265² =
  14. 14.571² =
  15. 15.630² =
  16. 16.658² =
  17. 17.6413² =
  18. 18.706² =
  19. 19.560² =
  20. 20.2788² =
  21. 21.357² =
  22. 22.741² =
  23. 23.410² =
  24. 24.670² =
  25. 25.387² =
  26. 26.259² =
  27. 27.467² =
  28. 28.689² =
  29. 29.661² =
  30. 30.745² =
  31. 31.608² =
  32. 32.972² =
  33. 33.853² =
  34. 34.3460² =
  35. 35.663² =
  36. 36.3423² =
  37. 37.4930² =
  38. 38.173² =
  39. 39.4852² =
  40. 40.551² =

Answer key

  1. 33373729
  2. 41667025
  3. 34187409
  4. 3196944
  5. 26569
  6. 36100
  7. 354025
  8. 3485689
  9. 61504
  10. 729316
  11. 994009
  12. 448900
  13. 70225
  14. 326041
  15. 396900
  16. 432964
  17. 41126569
  18. 498436
  19. 313600
  20. 7772944
  21. 127449
  22. 549081
  23. 168100
  24. 448900
  25. 149769
  26. 67081
  27. 218089
  28. 474721
  29. 436921
  30. 555025
  31. 369664
  32. 944784
  33. 727609
  34. 11971600
  35. 439569
  36. 11716929
  37. 24304900
  38. 29929
  39. 23541904
  40. 303601

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