9.9 Plus 3.1 Addition :

Number 1	Number 2	Answer
9.9	3.1	13

How to calculate 9.9 plus 3.1 ?

Let's break down the addition of 9.9 and 3.1 step by step:

   9.9      <-- Start with the rightmost column
+  3.1
---------

    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.

   9.9
+  3.1
---------
     0


    Add the digits in the rightmost column:
        9 + 3 + 1 = 13
        Write down 3 in the rightmost column, carry over 1 to the next column.

   9.9
+  3.1
---------
     3.0

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

The final result is 13.0.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	6.1	16.1	10 plus 6.1
10.1	9.1	19.2	10.1 plus 9.1
10.2	11.1	21.3	10.2 plus 11.1
1	2.8	3.8	1 plus 2.8
2.6	2.8	5.4	2.6 plus 2.8
3.2	4.1	7.3	3.2 plus 4.1