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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 336 · 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. 1.475² =
  2. 2.755² =
  3. 3.706² =
  4. 4.328² =
  5. 5.445² =
  6. 6.747² =
  7. 7.142² =
  8. 8.3505² =
  9. 9.295² =
  10. 10.634² =
  11. 11.8428² =
  12. 12.5971² =
  13. 13.266² =
  14. 14.862² =
  15. 15.203² =
  16. 16.2343² =
  17. 17.795² =
  18. 18.330² =
  19. 19.8789² =
  20. 20.679² =
  21. 21.649² =
  22. 22.1819² =
  23. 23.3063² =
  24. 24.398² =
  25. 25.878² =
  26. 26.9092² =
  27. 27.664² =
  28. 28.787² =
  29. 29.554² =
  30. 30.9367² =
  31. 31.6304² =
  32. 32.843² =
  33. 33.7342² =
  34. 34.827² =
  35. 35.7208² =
  36. 36.5207² =
  37. 37.617² =
  38. 38.750² =
  39. 39.8149² =
  40. 40.390² =

Answer key

  1. 225625
  2. 570025
  3. 498436
  4. 107584
  5. 198025
  6. 558009
  7. 20164
  8. 12285025
  9. 87025
  10. 401956
  11. 71031184
  12. 35652841
  13. 70756
  14. 743044
  15. 41209
  16. 5489649
  17. 632025
  18. 108900
  19. 77246521
  20. 461041
  21. 421201
  22. 3308761
  23. 9381969
  24. 158404
  25. 770884
  26. 82664464
  27. 440896
  28. 619369
  29. 306916
  30. 87740689
  31. 39740416
  32. 710649
  33. 53904964
  34. 683929
  35. 51955264
  36. 27112849
  37. 380689
  38. 562500
  39. 66406201
  40. 152100

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