87.7 Plus 421 Addition :

Number 1 Number 2 Answer
87.7 421 508.7

How to calculate 87.7 plus 421 ?

Let's break down the addition of 087.7 and 42100 step by step:

   087.7      <-- Start with the rightmost column
+  42100
---------

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

   087.7
+  42100
---------
     7


    Add the digits in the rightmost column:
        7 + 1 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   087.7
+  42100
---------
     8.7


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

   087.7
+  42100
---------
     08.7


    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.

   087.7
+  42100
---------
     508.7

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

The final result is 508.7.
So, 087.7 + 42100 = 508.7

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