9.9 Plus 20 Addition :

Number 1	Number 2	Answer
9.9	20	29.9

How to calculate 9.9 plus 20 ?

Let's break down the addition of 09.9 and 2000 step by step:

   09.9      <-- Start with the rightmost column
+  2000
---------

    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
+  2000
---------
     9


    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
+  2000
---------
     9.9


    Add the digits in the rightmost column:
        0 + 2 + 0 = 2
        Write down 2 in the rightmost column, carry over 0 to the next column.

   09.9
+  2000
---------
     29.9

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

The final result is 29.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	21	31	10 plus 21
10.1	27	37.1	10.1 plus 27
10.2	30	40.2	10.2 plus 30
3	6.7	9.7	3 plus 6.7
1.7	5.5	7.2	1.7 plus 5.5
8.6	9.1	17.7	8.6 plus 9.1