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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 985 · 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. 1.556² =
  2. 2.979² =
  3. 3.5313² =
  4. 4.297² =
  5. 5.3089² =
  6. 6.566² =
  7. 7.888² =
  8. 8.272² =
  9. 9.701² =
  10. 10.8139² =
  11. 11.4156² =
  12. 12.8321² =
  13. 13.795² =
  14. 14.767² =
  15. 15.2454² =
  16. 16.167² =
  17. 17.799² =
  18. 18.794² =
  19. 19.210² =
  20. 20.2561² =
  21. 21.240² =
  22. 22.397² =
  23. 23.663² =
  24. 24.5405² =
  25. 25.335² =
  26. 26.126² =
  27. 27.764² =
  28. 28.587² =
  29. 29.320² =
  30. 30.636² =
  31. 31.705² =
  32. 32.507² =
  33. 33.709² =
  34. 34.132² =
  35. 35.4503² =
  36. 36.644² =
  37. 37.682² =
  38. 38.734² =
  39. 39.1182² =
  40. 40.415² =

Answer key

  1. 309136
  2. 958441
  3. 28227969
  4. 88209
  5. 9541921
  6. 320356
  7. 788544
  8. 73984
  9. 491401
  10. 66243321
  11. 17272336
  12. 69239041
  13. 632025
  14. 588289
  15. 6022116
  16. 27889
  17. 638401
  18. 630436
  19. 44100
  20. 6558721
  21. 57600
  22. 157609
  23. 439569
  24. 29214025
  25. 112225
  26. 15876
  27. 583696
  28. 344569
  29. 102400
  30. 404496
  31. 497025
  32. 257049
  33. 502681
  34. 17424
  35. 20277009
  36. 414736
  37. 465124
  38. 538756
  39. 1397124
  40. 172225

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