12.9 Plus 409 Addition :

Number 1 Number 2 Answer
12.9 409 421.9

How to calculate 12.9 plus 409 ?

Let's break down the addition of 012.9 and 40900 step by step:

   012.9      <-- Start with the rightmost column
+  40900
---------

    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.

   012.9
+  40900
---------
     9


    Add the digits in the rightmost column:
        2 + 9 + 1 = 11
        Write down 1 in the rightmost column, carry over 1 to the next column.

   012.9
+  40900
---------
     1.9


    Add the digits in the rightmost column:
        1 + 0 + 0 = 2
        Write down 2 in the rightmost column, carry over 0 to the next column.

   012.9
+  40900
---------
     21.9


    Add the digits in the rightmost column:
        0 + 4 + 0 = 4
        Write down 4 in the rightmost column, carry over 0 to the next column.

   012.9
+  40900
---------
     421.9

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

The final result is 421.9.
So, 012.9 + 40900 = 421.9

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