9.9 Plus 1 Addition :

Number 1	Number 2	Answer
9.9	1	10.9

How to calculate 9.9 plus 1 ?

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

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

    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.

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

   9.9
+  100
---------
     0.9

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

The final result is 10.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	7	17	10 plus 7
10.1	15	25.1	10.1 plus 15
10.2	20	30.2	10.2 plus 20
2.7	8	10.7	2.7 plus 8
9	1.9	10.9	9 plus 1.9
5.2	2.8	8	5.2 plus 2.8