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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 866 · 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. 1.206² =
  2. 2.194² =
  3. 3.9701² =
  4. 4.117² =
  5. 5.800² =
  6. 6.3689² =
  7. 7.889² =
  8. 8.3564² =
  9. 9.585² =
  10. 10.512² =
  11. 11.6103² =
  12. 12.171² =
  13. 13.847² =
  14. 14.644² =
  15. 15.610² =
  16. 16.1435² =
  17. 17.4395² =
  18. 18.103² =
  19. 19.784² =
  20. 20.564² =
  21. 21.502² =
  22. 22.1712² =
  23. 23.924² =
  24. 24.591² =
  25. 25.460² =
  26. 26.286² =
  27. 27.273² =
  28. 28.492² =
  29. 29.508² =
  30. 30.8359² =
  31. 31.466² =
  32. 32.366² =
  33. 33.196² =
  34. 34.2054² =
  35. 35.426² =
  36. 36.175² =
  37. 37.166² =
  38. 38.690² =
  39. 39.711² =
  40. 40.5008² =

Answer key

  1. 42436
  2. 37636
  3. 94109401
  4. 13689
  5. 640000
  6. 13608721
  7. 790321
  8. 12702096
  9. 342225
  10. 262144
  11. 37246609
  12. 29241
  13. 717409
  14. 414736
  15. 372100
  16. 2059225
  17. 19316025
  18. 10609
  19. 614656
  20. 318096
  21. 252004
  22. 2930944
  23. 853776
  24. 349281
  25. 211600
  26. 81796
  27. 74529
  28. 242064
  29. 258064
  30. 69872881
  31. 217156
  32. 133956
  33. 38416
  34. 4218916
  35. 181476
  36. 30625
  37. 27556
  38. 476100
  39. 505521
  40. 25080064

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