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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 741 · 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. 1.902² =
  2. 2.143² =
  3. 3.537² =
  4. 4.188² =
  5. 5.861² =
  6. 6.901² =
  7. 7.513² =
  8. 8.5556² =
  9. 9.374² =
  10. 10.1849² =
  11. 11.8177² =
  12. 12.252² =
  13. 13.149² =
  14. 14.292² =
  15. 15.2631² =
  16. 16.545² =
  17. 17.942² =
  18. 18.866² =
  19. 19.7283² =
  20. 20.828² =
  21. 21.852² =
  22. 22.7215² =
  23. 23.780² =
  24. 24.1533² =
  25. 25.824² =
  26. 26.625² =
  27. 27.265² =
  28. 28.228² =
  29. 29.755² =
  30. 30.6249² =
  31. 31.980² =
  32. 32.773² =
  33. 33.143² =
  34. 34.561² =
  35. 35.626² =
  36. 36.384² =
  37. 37.5531² =
  38. 38.684² =
  39. 39.7614² =
  40. 40.6011² =

Answer key

  1. 813604
  2. 20449
  3. 288369
  4. 35344
  5. 741321
  6. 811801
  7. 263169
  8. 30869136
  9. 139876
  10. 3418801
  11. 66863329
  12. 63504
  13. 22201
  14. 85264
  15. 6922161
  16. 297025
  17. 887364
  18. 749956
  19. 53042089
  20. 685584
  21. 725904
  22. 52056225
  23. 608400
  24. 2350089
  25. 678976
  26. 390625
  27. 70225
  28. 51984
  29. 570025
  30. 39050001
  31. 960400
  32. 597529
  33. 20449
  34. 314721
  35. 391876
  36. 147456
  37. 30591961
  38. 467856
  39. 57972996
  40. 36132121

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