2 Plus 3.9 Addition :

Number 1	Number 2	Answer
2	3.9	5.9

How to calculate 2 plus 3.9 ?

Let's break down the addition of 200 and 3.9 step by step:

   200      <-- Start with the rightmost column
+  3.9
---------

    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.

   200
+  3.9
---------
     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.

   200
+  3.9
---------
     09


    Add the digits in the rightmost column:
        2 + 3 + 0 = 5
        Write down 5 in the rightmost column, carry over 0 to the next column.

   200
+  3.9
---------
     509

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

The final result is 509.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
2.1	6.9	9	2.1 plus 6.9
2.2	8.9	11.1	2.2 plus 8.9
2.3	16.9	19.2	2.3 plus 16.9
2.4	5.8	8.2	2.4 plus 5.8
2.2	4.5	6.7	2.2 plus 4.5
8	4.4	12.4	8 plus 4.4