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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 216 · 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. 1.867² =
  2. 2.2575² =
  3. 3.474² =
  4. 4.244² =
  5. 5.338² =
  6. 6.860² =
  7. 7.980² =
  8. 8.2855² =
  9. 9.667² =
  10. 10.991² =
  11. 11.993² =
  12. 12.754² =
  13. 13.572² =
  14. 14.592² =
  15. 15.9431² =
  16. 16.489² =
  17. 17.503² =
  18. 18.385² =
  19. 19.380² =
  20. 20.172² =
  21. 21.137² =
  22. 22.498² =
  23. 23.2354² =
  24. 24.610² =
  25. 25.890² =
  26. 26.5337² =
  27. 27.526² =
  28. 28.3026² =
  29. 29.5211² =
  30. 30.855² =
  31. 31.406² =
  32. 32.842² =
  33. 33.7136² =
  34. 34.942² =
  35. 35.260² =
  36. 36.7959² =
  37. 37.828² =
  38. 38.120² =
  39. 39.707² =
  40. 40.381² =

Answer key

  1. 751689
  2. 6630625
  3. 224676
  4. 59536
  5. 114244
  6. 739600
  7. 960400
  8. 8151025
  9. 444889
  10. 982081
  11. 986049
  12. 568516
  13. 327184
  14. 350464
  15. 88943761
  16. 239121
  17. 253009
  18. 148225
  19. 144400
  20. 29584
  21. 18769
  22. 248004
  23. 5541316
  24. 372100
  25. 792100
  26. 28483569
  27. 276676
  28. 9156676
  29. 27154521
  30. 731025
  31. 164836
  32. 708964
  33. 50922496
  34. 887364
  35. 67600
  36. 63345681
  37. 685584
  38. 14400
  39. 499849
  40. 145161

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