9.9 Plus 31 Addition :

Number 1	Number 2	Answer
9.9	31	40.9

How to calculate 9.9 plus 31 ?

Let's break down the addition of 09.9 and 3100 step by step:

   09.9      <-- Start with the rightmost column
+  3100
---------

    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
+  3100
---------
     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
+  3100
---------
     0.9


    Add the digits in the rightmost column:
        0 + 3 + 0 = 4
        Write down 4 in the rightmost column, carry over 0 to the next column.

   09.9
+  3100
---------
     40.9

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

The final result is 40.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	40	50	10 plus 40
10.1	49	59.1	10.1 plus 49
10.2	58	68.2	10.2 plus 58
1.6	8.6	10.2	1.6 plus 8.6
7.8	9.1	16.9	7.8 plus 9.1
1.3	5.6	6.9	1.3 plus 5.6