9.9 Plus 3 Addition :

Number 1	Number 2	Answer
9.9	3	12.9

How to calculate 9.9 plus 3 ?

Let's break down the addition of 9.9 and 300 step by step:

   9.9      <-- Start with the rightmost column
+  300
---------

    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
+  300
---------
     9


    Add the digits in the rightmost column:
        9 + 3 + 1 = 12
        Write down 2 in the rightmost column, carry over 1 to the next column.

   9.9
+  300
---------
     2.9

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

The final result is 12.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	7	17	10 plus 7
10.1	8	18.1	10.1 plus 8
10.2	16	26.2	10.2 plus 16
8.1	5	13.1	8.1 plus 5
3.6	0.7	4.3	3.6 plus 0.7
7.3	7.9	15.2	7.3 plus 7.9