find the smallest 4 digit number which is a perfect square with solution by long division method
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The smallest 4 digit number is -9999. Its square is (-9999)(-9999) = 99980001. If you're asking what the smallest positive 4 digit number that IS a perfect square is, the answer is 1024 = 32^2. (The next smaller square, 31^2 = 961 is only a 3 digit number.)
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