8.4 Plus 420 Addition :

Number 1	Number 2	Answer
8.4	420	428.4

How to calculate 8.4 plus 420 ?

Let's break down the addition of 008.4 and 42000 step by step:

   008.4      <-- Start with the rightmost column
+  42000
---------

    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.

   008.4
+  42000
---------
     4


    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
+  42000
---------
     8.4


    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
+  42000
---------
     28.4


    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.

   008.4
+  42000
---------
     428.4

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

The final result is 428.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.5	426	434.5	8.5 plus 426
8.6	431	439.6	8.6 plus 431
8.7	437	445.7	8.7 plus 437
4.8	0.4	5.2	4.8 plus 0.4
9.3	5.6	14.9	9.3 plus 5.6
7.6	0.9	8.5	7.6 plus 0.9