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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 710 · 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. 1.169² =
  2. 2.935² =
  3. 3.637² =
  4. 4.798² =
  5. 5.314² =
  6. 6.418² =
  7. 7.234² =
  8. 8.654² =
  9. 9.6038² =
  10. 10.140² =
  11. 11.1141² =
  12. 12.3466² =
  13. 13.4184² =
  14. 14.3676² =
  15. 15.982² =
  16. 16.8158² =
  17. 17.501² =
  18. 18.824² =
  19. 19.730² =
  20. 20.580² =
  21. 21.405² =
  22. 22.126² =
  23. 23.169² =
  24. 24.251² =
  25. 25.244² =
  26. 26.826² =
  27. 27.896² =
  28. 28.634² =
  29. 29.761² =
  30. 30.554² =
  31. 31.5256² =
  32. 32.281² =
  33. 33.749² =
  34. 34.6529² =
  35. 35.3828² =
  36. 36.5192² =
  37. 37.346² =
  38. 38.244² =
  39. 39.476² =
  40. 40.906² =

Answer key

  1. 28561
  2. 874225
  3. 405769
  4. 636804
  5. 98596
  6. 174724
  7. 54756
  8. 427716
  9. 36457444
  10. 19600
  11. 1301881
  12. 12013156
  13. 17505856
  14. 13512976
  15. 964324
  16. 66552964
  17. 251001
  18. 678976
  19. 532900
  20. 336400
  21. 164025
  22. 15876
  23. 28561
  24. 63001
  25. 59536
  26. 682276
  27. 802816
  28. 401956
  29. 579121
  30. 306916
  31. 27625536
  32. 78961
  33. 561001
  34. 42627841
  35. 14653584
  36. 26956864
  37. 119716
  38. 59536
  39. 226576
  40. 820836

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