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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 48 · 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. 1.783² =
  2. 2.859² =
  3. 3.118² =
  4. 4.696² =
  5. 5.2048² =
  6. 6.4792² =
  7. 7.2460² =
  8. 8.122² =
  9. 9.263² =
  10. 10.6547² =
  11. 11.757² =
  12. 12.2100² =
  13. 13.8942² =
  14. 14.236² =
  15. 15.484² =
  16. 16.205² =
  17. 17.108² =
  18. 18.197² =
  19. 19.305² =
  20. 20.221² =
  21. 21.7938² =
  22. 22.721² =
  23. 23.6625² =
  24. 24.689² =
  25. 25.617² =
  26. 26.231² =
  27. 27.8092² =
  28. 28.307² =
  29. 29.8283² =
  30. 30.658² =
  31. 31.1820² =
  32. 32.3994² =
  33. 33.835² =
  34. 34.7071² =
  35. 35.552² =
  36. 36.8746² =
  37. 37.812² =
  38. 38.735² =
  39. 39.824² =
  40. 40.528² =

Answer key

  1. 613089
  2. 737881
  3. 13924
  4. 484416
  5. 4194304
  6. 22963264
  7. 6051600
  8. 14884
  9. 69169
  10. 42863209
  11. 573049
  12. 4410000
  13. 79959364
  14. 55696
  15. 234256
  16. 42025
  17. 11664
  18. 38809
  19. 93025
  20. 48841
  21. 63011844
  22. 519841
  23. 43890625
  24. 474721
  25. 380689
  26. 53361
  27. 65480464
  28. 94249
  29. 68608089
  30. 432964
  31. 3312400
  32. 15952036
  33. 697225
  34. 49999041
  35. 304704
  36. 76492516
  37. 659344
  38. 540225
  39. 678976
  40. 278784

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