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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 635 · 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. 1.6119² =
  2. 2.401² =
  3. 3.664² =
  4. 4.823² =
  5. 5.899² =
  6. 6.239² =
  7. 7.165² =
  8. 8.486² =
  9. 9.251² =
  10. 10.7674² =
  11. 11.372² =
  12. 12.808² =
  13. 13.735² =
  14. 14.194² =
  15. 15.260² =
  16. 16.125² =
  17. 17.606² =
  18. 18.304² =
  19. 19.763² =
  20. 20.340² =
  21. 21.695² =
  22. 22.859² =
  23. 23.1104² =
  24. 24.795² =
  25. 25.388² =
  26. 26.7228² =
  27. 27.4612² =
  28. 28.833² =
  29. 29.962² =
  30. 30.2289² =
  31. 31.2604² =
  32. 32.8100² =
  33. 33.419² =
  34. 34.965² =
  35. 35.3955² =
  36. 36.999² =
  37. 37.7818² =
  38. 38.800² =
  39. 39.483² =
  40. 40.767² =

Answer key

  1. 37442161
  2. 160801
  3. 440896
  4. 677329
  5. 808201
  6. 57121
  7. 27225
  8. 236196
  9. 63001
  10. 58890276
  11. 138384
  12. 652864
  13. 540225
  14. 37636
  15. 67600
  16. 15625
  17. 367236
  18. 92416
  19. 582169
  20. 115600
  21. 483025
  22. 737881
  23. 1218816
  24. 632025
  25. 150544
  26. 52243984
  27. 21270544
  28. 693889
  29. 925444
  30. 5239521
  31. 6780816
  32. 65610000
  33. 175561
  34. 931225
  35. 15642025
  36. 998001
  37. 61121124
  38. 640000
  39. 233289
  40. 588289

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