We have total 10 tiles in a bar.
So, each tile is called a tens.
10 tiles would make 10*10 = 100 bars.
So, 10 tens would make a hundred.
Different way to write a 100.
We have 10 bars of 10 tiles. Each bar is called a tens, so 10 tens makes 100 and it can be represented as
10 tens = 100
All 10 bars have 100 tiles so we can represent is by another way as
1 hundred 0 tens.
And 1 hundred in number form is 100, so we can write it this way also.
100 + 0.