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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 210 · 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. 1.4126² =
  2. 2.122² =
  3. 3.1654² =
  4. 4.244² =
  5. 5.146² =
  6. 6.525² =
  7. 7.265² =
  8. 8.2665² =
  9. 9.583² =
  10. 10.2490² =
  11. 11.7190² =
  12. 12.703² =
  13. 13.4723² =
  14. 14.339² =
  15. 15.5454² =
  16. 16.2458² =
  17. 17.2023² =
  18. 18.206² =
  19. 19.2330² =
  20. 20.512² =
  21. 21.527² =
  22. 22.645² =
  23. 23.9904² =
  24. 24.6024² =
  25. 25.2717² =
  26. 26.2879² =
  27. 27.149² =
  28. 28.589² =
  29. 29.504² =
  30. 30.179² =
  31. 31.972² =
  32. 32.230² =
  33. 33.620² =
  34. 34.548² =
  35. 35.824² =
  36. 36.2461² =
  37. 37.378² =
  38. 38.592² =
  39. 39.679² =
  40. 40.7941² =

Answer key

  1. 17023876
  2. 14884
  3. 2735716
  4. 59536
  5. 21316
  6. 275625
  7. 70225
  8. 7102225
  9. 339889
  10. 6200100
  11. 51696100
  12. 494209
  13. 22306729
  14. 114921
  15. 29746116
  16. 6041764
  17. 4092529
  18. 42436
  19. 5428900
  20. 262144
  21. 277729
  22. 416025
  23. 98089216
  24. 36288576
  25. 7382089
  26. 8288641
  27. 22201
  28. 346921
  29. 254016
  30. 32041
  31. 944784
  32. 52900
  33. 384400
  34. 300304
  35. 678976
  36. 6056521
  37. 142884
  38. 350464
  39. 461041
  40. 63059481

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