9.9 Plus 9 Addition :

Number 1	Number 2	Answer
9.9	9	18.9

How to calculate 9.9 plus 9 ?

Let's break down the addition of 9.9 and 900 step by step:

   9.9      <-- Start with the rightmost column
+  900
---------

    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.

   9.9
+  900
---------
     9


    Add the digits in the rightmost column:
        9 + 9 + 1 = 18
        Write down 8 in the rightmost column, carry over 1 to the next column.

   9.9
+  900
---------
     8.9

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

The final result is 18.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	11	21	10 plus 11
10.1	20	30.1	10.1 plus 20
10.2	28	38.2	10.2 plus 28
7.4	8.9	16.3	7.4 plus 8.9
8.8	3.9	12.7	8.8 plus 3.9
6	6.1	12.1	6 plus 6.1