8.4 Plus 400 Addition :

Number 1	Number 2	Answer
8.4	400	408.4

How to calculate 8.4 plus 400 ?

Let's break down the addition of 008.4 and 40000 step by step:

   008.4      <-- Start with the rightmost column
+  40000
---------

    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
+  40000
---------
     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
+  40000
---------
     8.4


    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.

   008.4
+  40000
---------
     08.4


    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
+  40000
---------
     408.4

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

The final result is 408.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.5	409	417.5	8.5 plus 409
8.6	413	421.6	8.6 plus 413
8.7	415	423.7	8.7 plus 415
1	0.4	1.4	1 plus 0.4
2.3	8	10.3	2.3 plus 8
4.4	5.1	9.5	4.4 plus 5.1