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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 361 · 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. 1.207² =
  2. 2.829² =
  3. 3.837² =
  4. 4.241² =
  5. 5.968² =
  6. 6.924² =
  7. 7.4863² =
  8. 8.117² =
  9. 9.326² =
  10. 10.414² =
  11. 11.4919² =
  12. 12.220² =
  13. 13.188² =
  14. 14.891² =
  15. 15.9075² =
  16. 16.693² =
  17. 17.351² =
  18. 18.246² =
  19. 19.978² =
  20. 20.354² =
  21. 21.420² =
  22. 22.681² =
  23. 23.419² =
  24. 24.8640² =
  25. 25.393² =
  26. 26.609² =
  27. 27.101² =
  28. 28.189² =
  29. 29.346² =
  30. 30.691² =
  31. 31.871² =
  32. 32.669² =
  33. 33.8530² =
  34. 34.9188² =
  35. 35.686² =
  36. 36.643² =
  37. 37.9229² =
  38. 38.668² =
  39. 39.418² =
  40. 40.356² =

Answer key

  1. 42849
  2. 687241
  3. 700569
  4. 58081
  5. 937024
  6. 853776
  7. 23648769
  8. 13689
  9. 106276
  10. 171396
  11. 24196561
  12. 48400
  13. 35344
  14. 793881
  15. 82355625
  16. 480249
  17. 123201
  18. 60516
  19. 956484
  20. 125316
  21. 176400
  22. 463761
  23. 175561
  24. 74649600
  25. 154449
  26. 370881
  27. 10201
  28. 35721
  29. 119716
  30. 477481
  31. 758641
  32. 447561
  33. 72760900
  34. 84419344
  35. 470596
  36. 413449
  37. 85174441
  38. 446224
  39. 174724
  40. 126736

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