7.7 Plus 21 Addition :

Number 1 Number 2 Answer
7.7 21 28.7

How to calculate 7.7 plus 21 ?

Let's break down the addition of 07.7 and 2100 step by step:

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

    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.

   07.7
+  2100
---------
     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.

   07.7
+  2100
---------
     8.7


    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.

   07.7
+  2100
---------
     28.7

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

The final result is 28.7.
So, 07.7 + 2100 = 28.7

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