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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 904 · 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. 1.229² =
  2. 2.656² =
  3. 3.4035² =
  4. 4.878² =
  5. 5.262² =
  6. 6.863² =
  7. 7.3599² =
  8. 8.9498² =
  9. 9.314² =
  10. 10.180² =
  11. 11.978² =
  12. 12.668² =
  13. 13.334² =
  14. 14.753² =
  15. 15.609² =
  16. 16.1273² =
  17. 17.631² =
  18. 18.558² =
  19. 19.164² =
  20. 20.289² =
  21. 21.8727² =
  22. 22.604² =
  23. 23.464² =
  24. 24.906² =
  25. 25.944² =
  26. 26.330² =
  27. 27.859² =
  28. 28.358² =
  29. 29.6736² =
  30. 30.8369² =
  31. 31.802² =
  32. 32.745² =
  33. 33.126² =
  34. 34.691² =
  35. 35.264² =
  36. 36.4616² =
  37. 37.286² =
  38. 38.1916² =
  39. 39.594² =
  40. 40.736² =

Answer key

  1. 52441
  2. 430336
  3. 16281225
  4. 770884
  5. 68644
  6. 744769
  7. 12952801
  8. 90212004
  9. 98596
  10. 32400
  11. 956484
  12. 446224
  13. 111556
  14. 567009
  15. 370881
  16. 1620529
  17. 398161
  18. 311364
  19. 26896
  20. 83521
  21. 76160529
  22. 364816
  23. 215296
  24. 820836
  25. 891136
  26. 108900
  27. 737881
  28. 128164
  29. 45373696
  30. 70040161
  31. 643204
  32. 555025
  33. 15876
  34. 477481
  35. 69696
  36. 21307456
  37. 81796
  38. 3671056
  39. 352836
  40. 541696

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