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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 863 · 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. 1.873² =
  2. 2.338² =
  3. 3.3619² =
  4. 4.2999² =
  5. 5.870² =
  6. 6.176² =
  7. 7.186² =
  8. 8.596² =
  9. 9.8085² =
  10. 10.2846² =
  11. 11.644² =
  12. 12.632² =
  13. 13.645² =
  14. 14.704² =
  15. 15.143² =
  16. 16.779² =
  17. 17.787² =
  18. 18.402² =
  19. 19.6426² =
  20. 20.7397² =
  21. 21.6523² =
  22. 22.124² =
  23. 23.8229² =
  24. 24.2489² =
  25. 25.3529² =
  26. 26.889² =
  27. 27.7526² =
  28. 28.3381² =
  29. 29.346² =
  30. 30.786² =
  31. 31.403² =
  32. 32.7565² =
  33. 33.3691² =
  34. 34.1549² =
  35. 35.797² =
  36. 36.5001² =
  37. 37.4517² =
  38. 38.2535² =
  39. 39.4079² =
  40. 40.299² =

Answer key

  1. 762129
  2. 114244
  3. 13097161
  4. 8994001
  5. 756900
  6. 30976
  7. 34596
  8. 355216
  9. 65367225
  10. 8099716
  11. 414736
  12. 399424
  13. 416025
  14. 495616
  15. 20449
  16. 606841
  17. 619369
  18. 161604
  19. 41293476
  20. 54715609
  21. 42549529
  22. 15376
  23. 67716441
  24. 6195121
  25. 12453841
  26. 790321
  27. 56640676
  28. 11431161
  29. 119716
  30. 617796
  31. 162409
  32. 57229225
  33. 13623481
  34. 2399401
  35. 635209
  36. 25010001
  37. 20403289
  38. 6426225
  39. 16638241
  40. 89401

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