Square magic of number 5

Dear Frnds

       After multiplication tricks we are now understand how we do square of last digit 5 numbers within 3 seconds.

Tricks:

Take example of last digit 5…..
ie. -45

Step1–   Do 5 square
               =5²             
               =25
Step 2: 
             Do 10th digit
Here i.e.    4
Next number of this number (4+1)
                =5
Multiply by 10th digit number
                 =5×4
                 =20
Now your answer is
Step 1 and step 2
              
                =2025
            Enjoy this trick and calculate faster ..