8.4 Plus 420.4 Addition :

Number 1	Number 2	Answer
8.4	420.4	428.8

How to calculate 8.4 plus 420.4 ?

Let's break down the addition of 008.4 and 420.4 step by step:

   008.4      <-- Start with the rightmost column
+  420.4
---------

    Add the digits in the rightmost column:
        4 + 4 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   008.4
+  420.4
---------
     8


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

   008.4
+  420.4
---------
     8.8


    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.

   008.4
+  420.4
---------
     28.8


    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.

   008.4
+  420.4
---------
     428.8

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

The final result is 428.8.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.5	421.4	429.9	8.5 plus 421.4
8.6	428.4	437	8.6 plus 428.4
8.7	437.4	446.1	8.7 plus 437.4
9	9.4	18.4	9 plus 9.4
4	0.2	4.2	4 plus 0.2
8.1	1.1	9.2	8.1 plus 1.1