Let's try XX Square

Let's try one more
97²

97-3=

94

*
94(00)
***
*
3 x 3 =9

*
9409

It's pretty easy

Go and practise these, you'll impress your friends

Read the Pixels

%Matlab
%read the image
a = imread('*.jpg')
imagesc(a)
b=ginput(x)
%x=100 means you can see the coordinate of 100 points
%click on the image and get the co-ordinates!