80.4 Plus 640 Addition :

Number 1	Number 2	Answer
80.4	640	720.4

How to calculate 80.4 plus 640 ?

Let's break down the addition of 080.4 and 64000 step by step:

   080.4      <-- Start with the rightmost column
+  64000
---------

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

   080.4
+  64000
---------
     4


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

   080.4
+  64000
---------
     0.4


    Add the digits in the rightmost column:
        8 + 4 + 1 = 12
        Write down 2 in the rightmost column, carry over 1 to the next column.

   080.4
+  64000
---------
     20.4


    Add the digits in the rightmost column:
        0 + 6 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   080.4
+  64000
---------
     720.4

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

The final result is 720.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
80.5	643	723.5	80.5 plus 643
80.6	647	727.6	80.6 plus 647
80.7	649	729.7	80.7 plus 649
6.4	3.7	10.1	6.4 plus 3.7
2.4	6.1	8.5	2.4 plus 6.1
7.7	6.8	14.5	7.7 plus 6.8