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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 424 · 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. 1.156² =
  2. 2.283² =
  3. 3.632² =
  4. 4.703² =
  5. 5.1895² =
  6. 6.673² =
  7. 7.717² =
  8. 8.116² =
  9. 9.1089² =
  10. 10.8239² =
  11. 11.280² =
  12. 12.555² =
  13. 13.1562² =
  14. 14.9804² =
  15. 15.3403² =
  16. 16.146² =
  17. 17.477² =
  18. 18.901² =
  19. 19.887² =
  20. 20.9636² =
  21. 21.2863² =
  22. 22.553² =
  23. 23.599² =
  24. 24.284² =
  25. 25.467² =
  26. 26.114² =
  27. 27.7599² =
  28. 28.3466² =
  29. 29.225² =
  30. 30.146² =
  31. 31.458² =
  32. 32.505² =
  33. 33.700² =
  34. 34.340² =
  35. 35.936² =
  36. 36.5041² =
  37. 37.460² =
  38. 38.228² =
  39. 39.6346² =
  40. 40.575² =

Answer key

  1. 24336
  2. 80089
  3. 399424
  4. 494209
  5. 3591025
  6. 452929
  7. 514089
  8. 13456
  9. 1185921
  10. 67881121
  11. 78400
  12. 308025
  13. 2439844
  14. 96118416
  15. 11580409
  16. 21316
  17. 227529
  18. 811801
  19. 786769
  20. 92852496
  21. 8196769
  22. 305809
  23. 358801
  24. 80656
  25. 218089
  26. 12996
  27. 57744801
  28. 12013156
  29. 50625
  30. 21316
  31. 209764
  32. 255025
  33. 490000
  34. 115600
  35. 876096
  36. 25411681
  37. 211600
  38. 51984
  39. 40271716
  40. 330625

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