8.9 Plus 21 Addition :

Number 1 Number 2 Answer
8.9 21 29.9

How to calculate 8.9 plus 21 ?

Let's break down the addition of 08.9 and 2100 step by step:

   08.9      <-- Start with the rightmost column
+  2100
---------

    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.

   08.9
+  2100
---------
     9


    Add the digits in the rightmost column:
        8 + 1 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   08.9
+  2100
---------
     9.9


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

   08.9
+  2100
---------
     29.9

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

The final result is 29.9.
So, 08.9 + 2100 = 29.9

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