21.5 Plus 664 Addition :

Number 1 Number 2 Answer
21.5 664 685.5

How to calculate 21.5 plus 664 ?

Let's break down the addition of 021.5 and 66400 step by step:

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

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

   021.5
+  66400
---------
     5


    Add the digits in the rightmost column:
        1 + 4 + 0 = 5
        Write down 5 in the rightmost column, carry over 0 to the next column.

   021.5
+  66400
---------
     5.5


    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.

   021.5
+  66400
---------
     85.5


    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.

   021.5
+  66400
---------
     685.5

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

The final result is 685.5.
So, 021.5 + 66400 = 685.5

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