square of a number ends with 5 in easy method

How to find square of a number ends with 5

 Suppose we have to find out square of 65

square of 65= 4225

now discuss how it find out . In 65, last digit is 5 . take square of 5 i.e 25

and 1st digit is 6, multiply 6 with one more than 6 i.e (6+1) i.e. 6*7=42

then write down the number 4225

Now check for one more number find square of 225

22*23  |  (5*5)

= 2*11*23  |  25

= 2*253 | 25       ( 23*11= 2 | (2+3)  |  3 )

= 50625



Try :  i) square of 95

        ii)  square of 45