9.9 Plus 11 Addition :

Number 1	Number 2	Answer
9.9	11	20.9

How to calculate 9.9 plus 11 ?

Let's break down the addition of 09.9 and 1100 step by step:

   09.9      <-- Start with the rightmost column
+  1100
---------

    Add the digits in the rightmost column:
        9 + 0 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   09.9
+  1100
---------
     9


    Add the digits in the rightmost column:
        9 + 1 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   09.9
+  1100
---------
     0.9


    Add the digits in the rightmost column:
        0 + 1 + 0 = 2
        Write down 2 in the rightmost column, carry over 0 to the next column.

   09.9
+  1100
---------
     20.9

    Continue to the left:
        There are no more columns to the left.

The final result is 20.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	16	26	10 plus 16
10.1	22	32.1	10.1 plus 22
10.2	28	38.2	10.2 plus 28
3	2.4	5.4	3 plus 2.4
8.4	4.2	12.6	8.4 plus 4.2
4.8	8.7	13.5	4.8 plus 8.7