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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 864 · 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. 1.8627² =
  2. 2.214² =
  3. 3.664² =
  4. 4.667² =
  5. 5.948² =
  6. 6.235² =
  7. 7.335² =
  8. 8.304² =
  9. 9.288² =
  10. 10.4264² =
  11. 11.587² =
  12. 12.595² =
  13. 13.703² =
  14. 14.734² =
  15. 15.913² =
  16. 16.743² =
  17. 17.679² =
  18. 18.841² =
  19. 19.443² =
  20. 20.177² =
  21. 21.123² =
  22. 22.577² =
  23. 23.852² =
  24. 24.466² =
  25. 25.342² =
  26. 26.4287² =
  27. 27.9997² =
  28. 28.770² =
  29. 29.117² =
  30. 30.307² =
  31. 31.8966² =
  32. 32.9419² =
  33. 33.4426² =
  34. 34.7431² =
  35. 35.5686² =
  36. 36.111² =
  37. 37.286² =
  38. 38.997² =
  39. 39.498² =
  40. 40.278² =

Answer key

  1. 74425129
  2. 45796
  3. 440896
  4. 444889
  5. 898704
  6. 55225
  7. 112225
  8. 92416
  9. 82944
  10. 18181696
  11. 344569
  12. 354025
  13. 494209
  14. 538756
  15. 833569
  16. 552049
  17. 461041
  18. 707281
  19. 196249
  20. 31329
  21. 15129
  22. 332929
  23. 725904
  24. 217156
  25. 116964
  26. 18378369
  27. 99940009
  28. 592900
  29. 13689
  30. 94249
  31. 80389156
  32. 88717561
  33. 19589476
  34. 55219761
  35. 32330596
  36. 12321
  37. 81796
  38. 994009
  39. 248004
  40. 77284

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