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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 10 · 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. 1.654² =
  2. 2.420² =
  3. 3.122² =
  4. 4.142² =
  5. 5.5342² =
  6. 6.110² =
  7. 7.434² =
  8. 8.7505² =
  9. 9.782² =
  10. 10.265² =
  11. 11.181² =
  12. 12.3421² =
  13. 13.327² =
  14. 14.796² =
  15. 15.489² =
  16. 16.841² =
  17. 17.670² =
  18. 18.496² =
  19. 19.213² =
  20. 20.457² =
  21. 21.360² =
  22. 22.3752² =
  23. 23.148² =
  24. 24.5476² =
  25. 25.643² =
  26. 26.306² =
  27. 27.192² =
  28. 28.736² =
  29. 29.948² =
  30. 30.383² =
  31. 31.268² =
  32. 32.615² =
  33. 33.998² =
  34. 34.219² =
  35. 35.1337² =
  36. 36.138² =
  37. 37.3832² =
  38. 38.7730² =
  39. 39.7818² =
  40. 40.1118² =

Answer key

  1. 427716
  2. 176400
  3. 14884
  4. 20164
  5. 28536964
  6. 12100
  7. 188356
  8. 56325025
  9. 611524
  10. 70225
  11. 32761
  12. 11703241
  13. 106929
  14. 633616
  15. 239121
  16. 707281
  17. 448900
  18. 246016
  19. 45369
  20. 208849
  21. 129600
  22. 14077504
  23. 21904
  24. 29986576
  25. 413449
  26. 93636
  27. 36864
  28. 541696
  29. 898704
  30. 146689
  31. 71824
  32. 378225
  33. 996004
  34. 47961
  35. 1787569
  36. 19044
  37. 14684224
  38. 59752900
  39. 61121124
  40. 1249924

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