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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 108 · 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. 1.4232² =
  2. 2.132² =
  3. 3.2429² =
  4. 4.2429² =
  5. 5.860² =
  6. 6.396² =
  7. 7.2932² =
  8. 8.7987² =
  9. 9.932² =
  10. 10.205² =
  11. 11.5654² =
  12. 12.331² =
  13. 13.4689² =
  14. 14.814² =
  15. 15.448² =
  16. 16.1793² =
  17. 17.586² =
  18. 18.4492² =
  19. 19.165² =
  20. 20.249² =
  21. 21.738² =
  22. 22.3977² =
  23. 23.186² =
  24. 24.215² =
  25. 25.281² =
  26. 26.766² =
  27. 27.2800² =
  28. 28.7973² =
  29. 29.775² =
  30. 30.433² =
  31. 31.656² =
  32. 32.420² =
  33. 33.1603² =
  34. 34.513² =
  35. 35.337² =
  36. 36.884² =
  37. 37.773² =
  38. 38.9002² =
  39. 39.434² =
  40. 40.806² =

Answer key

  1. 17909824
  2. 17424
  3. 5900041
  4. 5900041
  5. 739600
  6. 156816
  7. 8596624
  8. 63792169
  9. 868624
  10. 42025
  11. 31967716
  12. 109561
  13. 21986721
  14. 662596
  15. 200704
  16. 3214849
  17. 343396
  18. 20178064
  19. 27225
  20. 62001
  21. 544644
  22. 15816529
  23. 34596
  24. 46225
  25. 78961
  26. 586756
  27. 7840000
  28. 63568729
  29. 600625
  30. 187489
  31. 430336
  32. 176400
  33. 2569609
  34. 263169
  35. 113569
  36. 781456
  37. 597529
  38. 81036004
  39. 188356
  40. 649636

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