3.9 Plus 9 Addition :

Number 1 Number 2 Answer
3.9 9 12.9

How to calculate 3.9 plus 9 ?

Let's break down the addition of 3.9 and 900 step by step:

   3.9      <-- Start with the rightmost column
+  900
---------

    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.

   3.9
+  900
---------
     9


    Add the digits in the rightmost column:
        3 + 9 + 1 = 12
        Write down 2 in the rightmost column, carry over 1 to the next column.

   3.9
+  900
---------
     2.9

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

The final result is 12.9.
So, 3.9 + 900 = 12.9

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