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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 847 · 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. 1.3707² =
  2. 2.7610² =
  3. 3.589² =
  4. 4.742² =
  5. 5.526² =
  6. 6.5807² =
  7. 7.154² =
  8. 8.8100² =
  9. 9.379² =
  10. 10.308² =
  11. 11.7135² =
  12. 12.407² =
  13. 13.409² =
  14. 14.433² =
  15. 15.722² =
  16. 16.349² =
  17. 17.7570² =
  18. 18.489² =
  19. 19.8930² =
  20. 20.205² =
  21. 21.242² =
  22. 22.3717² =
  23. 23.248² =
  24. 24.808² =
  25. 25.693² =
  26. 26.294² =
  27. 27.304² =
  28. 28.458² =
  29. 29.165² =
  30. 30.990² =
  31. 31.653² =
  32. 32.422² =
  33. 33.213² =
  34. 34.316² =
  35. 35.4518² =
  36. 36.1613² =
  37. 37.611² =
  38. 38.540² =
  39. 39.867² =
  40. 40.189² =

Answer key

  1. 13741849
  2. 57912100
  3. 346921
  4. 550564
  5. 276676
  6. 33721249
  7. 23716
  8. 65610000
  9. 143641
  10. 94864
  11. 50908225
  12. 165649
  13. 167281
  14. 187489
  15. 521284
  16. 121801
  17. 57304900
  18. 239121
  19. 79744900
  20. 42025
  21. 58564
  22. 13816089
  23. 61504
  24. 652864
  25. 480249
  26. 86436
  27. 92416
  28. 209764
  29. 27225
  30. 980100
  31. 426409
  32. 178084
  33. 45369
  34. 99856
  35. 20412324
  36. 2601769
  37. 373321
  38. 291600
  39. 751689
  40. 35721

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