12.4 Plus 387.9 Addition :

Number 1	Number 2	Answer
12.4	387.9	400.3

How to calculate 12.4 plus 387.9 ?

Let's break down the addition of 012.4 and 387.9 step by step:

   012.4      <-- Start with the rightmost column
+  387.9
---------

    Add the digits in the rightmost column:
        4 + 9 + 1 = 13
        Write down 3 in the rightmost column, carry over 1 to the next column.

   012.4
+  387.9
---------
     3


    Add the digits in the rightmost column:
        2 + 7 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   012.4
+  387.9
---------
     0.3


    Add the digits in the rightmost column:
        1 + 8 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   012.4
+  387.9
---------
     00.3


    Add the digits in the rightmost column:
        0 + 3 + 0 = 4
        Write down 4 in the rightmost column, carry over 0 to the next column.

   012.4
+  387.9
---------
     400.3

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

The final result is 400.3.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
12.5	393.9	406.4	12.5 plus 393.9
12.6	395.9	408.5	12.6 plus 395.9
12.7	400.9	413.6	12.7 plus 400.9
7.6	3.8	11.4	7.6 plus 3.8
9.1	1	10.1	9.1 plus 1
1.2	2.9	4.1	1.2 plus 2.9