20.4 Plus 664 Addition :

Number 1	Number 2	Answer
20.4	664	684.4

How to calculate 20.4 plus 664 ?

Let's break down the addition of 020.4 and 66400 step by step:

   020.4      <-- Start with the rightmost column
+  66400
---------

    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.

   020.4
+  66400
---------
     4


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

   020.4
+  66400
---------
     4.4


    Add the digits in the rightmost column:
        2 + 6 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   020.4
+  66400
---------
     84.4


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

   020.4
+  66400
---------
     684.4

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

The final result is 684.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
20.5	668	688.5	20.5 plus 668
20.6	673	693.6	20.6 plus 673
20.7	677	697.7	20.7 plus 677
8.9	6.8	15.7	8.9 plus 6.8
1.9	4.5	6.4	1.9 plus 4.5
6	7.5	13.5	6 plus 7.5