21.9 Plus 487.9 Addition :

Number 1 Number 2 Answer
21.9 487.9 509.8

How to calculate 21.9 plus 487.9 ?

Let's break down the addition of 021.9 and 487.9 step by step:

   021.9      <-- Start with the rightmost column
+  487.9
---------

    Add the digits in the rightmost column:
        9 + 9 + 1 = 18
        Write down 8 in the rightmost column, carry over 1 to the next column.

   021.9
+  487.9
---------
     8


    Add the digits in the rightmost column:
        1 + 7 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   021.9
+  487.9
---------
     9.8


    Add the digits in the rightmost column:
        2 + 8 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   021.9
+  487.9
---------
     09.8


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

   021.9
+  487.9
---------
     509.8

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

The final result is 509.8.
So, 021.9 + 487.9 = 509.8

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