10.9 Plus 80 Addition :

Number 1	Number 2	Answer
10.9	80	90.9

How to calculate 10.9 plus 80 ?

Let's break down the addition of 10.9 and 8000 step by step:

   10.9      <-- Start with the rightmost column
+  8000
---------

    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.

   10.9
+  8000
---------
     9


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

   10.9
+  8000
---------
     0.9


    Add the digits in the rightmost column:
        1 + 8 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   10.9
+  8000
---------
     90.9

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

The final result is 90.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
11	86	97	11 plus 86
11.1	95	106.1	11.1 plus 95
11.2	97	108.2	11.2 plus 97
9.7	9.9	19.6	9.7 plus 9.9
1	4.7	5.7	1 plus 4.7
1.5	4.5	6	1.5 plus 4.5