9.9 Plus 18 Addition :

Number 1	Number 2	Answer
9.9	18	27.9

How to calculate 9.9 plus 18 ?

Let's break down the addition of 09.9 and 1800 step by step:

   09.9      <-- Start with the rightmost column
+  1800
---------

    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
+  1800
---------
     9


    Add the digits in the rightmost column:
        9 + 8 + 1 = 17
        Write down 7 in the rightmost column, carry over 1 to the next column.

   09.9
+  1800
---------
     7.9


    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
+  1800
---------
     27.9

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

The final result is 27.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	20	30	10 plus 20
10.1	24	34.1	10.1 plus 24
10.2	25	35.2	10.2 plus 25
6.2	8.2	14.4	6.2 plus 8.2
7	0.4	7.4	7 plus 0.4
6.4	4.6	11	6.4 plus 4.6