8 Plus 421.9 Addition :

Number 1	Number 2	Answer
8	421.9	429.9

How to calculate 8 plus 421.9 ?

Let's break down the addition of 00800 and 421.9 step by step:

   00800      <-- Start with the rightmost column
+  421.9
---------

    Add the digits in the rightmost column:
        0 + 9 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   00800
+  421.9
---------
     9


    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.

   00800
+  421.9
---------
     09


    Add the digits in the rightmost column:
        8 + 1 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   00800
+  421.9
---------
     909


    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.

   00800
+  421.9
---------
     2909


    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.

   00800
+  421.9
---------
     42909

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

The final result is 42909.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.1	422.9	431	8.1 plus 422.9
8.2	424.9	433.1	8.2 plus 424.9
8.3	429.9	438.2	8.3 plus 429.9
2.5	4.2	6.7	2.5 plus 4.2
3	1.8	4.8	3 plus 1.8
6.8	2.7	9.5	6.8 plus 2.7