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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 891 · 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. 1.553² =
  2. 2.7269² =
  3. 3.889² =
  4. 4.746² =
  5. 5.9084² =
  6. 6.5071² =
  7. 7.208² =
  8. 8.200² =
  9. 9.204² =
  10. 10.693² =
  11. 11.232² =
  12. 12.365² =
  13. 13.132² =
  14. 14.335² =
  15. 15.1226² =
  16. 16.3525² =
  17. 17.736² =
  18. 18.881² =
  19. 19.1704² =
  20. 20.608² =
  21. 21.261² =
  22. 22.297² =
  23. 23.1878² =
  24. 24.5611² =
  25. 25.790² =
  26. 26.690² =
  27. 27.3013² =
  28. 28.2447² =
  29. 29.1517² =
  30. 30.777² =
  31. 31.865² =
  32. 32.614² =
  33. 33.932² =
  34. 34.1286² =
  35. 35.523² =
  36. 36.473² =
  37. 37.841² =
  38. 38.5286² =
  39. 39.2539² =
  40. 40.821² =

Answer key

  1. 305809
  2. 52838361
  3. 790321
  4. 556516
  5. 82519056
  6. 25715041
  7. 43264
  8. 40000
  9. 41616
  10. 480249
  11. 53824
  12. 133225
  13. 17424
  14. 112225
  15. 1503076
  16. 12425625
  17. 541696
  18. 776161
  19. 2903616
  20. 369664
  21. 68121
  22. 88209
  23. 3526884
  24. 31483321
  25. 624100
  26. 476100
  27. 9078169
  28. 5987809
  29. 2301289
  30. 603729
  31. 748225
  32. 376996
  33. 868624
  34. 1653796
  35. 273529
  36. 223729
  37. 707281
  38. 27941796
  39. 6446521
  40. 674041

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