Question

what least number must be subtracted from 176 to make it a perfect square ?

Answer 1

[ first of all we need to find the sq. root of 176 by long division method, as shown in the attachment ]

[ Then do as follow ]

The remainder = 7

Smallest no. to be subtracted = 7

Perfect sq. = 176-7
= 169

$\sqrt{169} = 13$