You want the 'square root (625) = 25 .
So 25 x 25 = 25^2 = 625
Without a calculate, we note that '625' ends in '5'.; so it will divide by '5'
Hence
5)625=
5)125= ( continue dividing by '5' to reach an answer of '1' ).
5)25=
5)5 = 1
We note that we have divided four times over. 5 x 5 x 5 x 5
This equals 25 x 25 .
Hence the number 25 multiplied to itself gives an aanswer of '625'.
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25
25 x 25 = 625
-25 or +25
The closest whole number is 54 which is 625.
It is the square root of 625 which is 25