1 Plus 9.9 Addition :

Number 1	Number 2	Answer
1	9.9	10.9

How to calculate 1 plus 9.9 ?

Let's break down the addition of 100 and 9.9 step by step:

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

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

   100
+  9.9
---------
     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.

   100
+  9.9
---------
     09


    Add the digits in the rightmost column:
        1 + 9 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   100
+  9.9
---------
     009

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

The final result is 1009.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
1.1	18.9	20	1.1 plus 18.9
1.2	22.9	24.1	1.2 plus 22.9
1.3	30.9	32.2	1.3 plus 30.9
2.4	8.4	10.8	2.4 plus 8.4
8.9	9.7	18.6	8.9 plus 9.7
8	2	10	8 plus 2