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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 837 · 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. 1.728² =
  2. 2.497² =
  3. 3.7449² =
  4. 4.463² =
  5. 5.380² =
  6. 6.5063² =
  7. 7.962² =
  8. 8.955² =
  9. 9.582² =
  10. 10.140² =
  11. 11.824² =
  12. 12.669² =
  13. 13.746² =
  14. 14.1652² =
  15. 15.868² =
  16. 16.296² =
  17. 17.4844² =
  18. 18.1637² =
  19. 19.532² =
  20. 20.7938² =
  21. 21.2210² =
  22. 22.246² =
  23. 23.663² =
  24. 24.5478² =
  25. 25.595² =
  26. 26.5505² =
  27. 27.320² =
  28. 28.716² =
  29. 29.4509² =
  30. 30.805² =
  31. 31.699² =
  32. 32.948² =
  33. 33.164² =
  34. 34.340² =
  35. 35.649² =
  36. 36.120² =
  37. 37.459² =
  38. 38.1261² =
  39. 39.761² =
  40. 40.581² =

Answer key

  1. 529984
  2. 247009
  3. 55487601
  4. 214369
  5. 144400
  6. 25633969
  7. 925444
  8. 912025
  9. 338724
  10. 19600
  11. 678976
  12. 447561
  13. 556516
  14. 2729104
  15. 753424
  16. 87616
  17. 23464336
  18. 2679769
  19. 283024
  20. 63011844
  21. 4884100
  22. 60516
  23. 439569
  24. 30008484
  25. 354025
  26. 30305025
  27. 102400
  28. 512656
  29. 20331081
  30. 648025
  31. 488601
  32. 898704
  33. 26896
  34. 115600
  35. 421201
  36. 14400
  37. 210681
  38. 1590121
  39. 579121
  40. 337561

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