20.9 Plus 664 Addition :

Number 1 Number 2 Answer
20.9 664 684.9

How to calculate 20.9 plus 664 ?

Let's break down the addition of 020.9 and 66400 step by step:

   020.9      <-- Start with the rightmost column
+  66400
---------

    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.

   020.9
+  66400
---------
     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.

   020.9
+  66400
---------
     4.9


    Add the digits in the rightmost column:
        2 + 6 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   020.9
+  66400
---------
     84.9


    Add the digits in the rightmost column:
        0 + 6 + 0 = 6
        Write down 6 in the rightmost column, carry over 0 to the next column.

   020.9
+  66400
---------
     684.9

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

The final result is 684.9.
So, 020.9 + 66400 = 684.9

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