The above method is the usual method we learn at school i.e; adding each column from right to left and carrying the extra's to the next column to get our final answer.
Addition in Maths using DOTS
From the above , we see that the 1's on the left side of the two-digit number are replaced as DOTS and then counted back for the addition operation for the next column
Another Example :
Isn't it amazing and true that Math is FUN ?