12.4 Plus 138.9 Addition :

Number 1	Number 2	Answer
12.4	138.9	151.3

How to calculate 12.4 plus 138.9 ?

Let's break down the addition of 012.4 and 138.9 step by step:

   012.4      <-- Start with the rightmost column
+  138.9
---------

    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
+  138.9
---------
     3


    Add the digits in the rightmost column:
        2 + 8 + 1 = 11
        Write down 1 in the rightmost column, carry over 1 to the next column.

   012.4
+  138.9
---------
     1.3


    Add the digits in the rightmost column:
        1 + 3 + 0 = 5
        Write down 5 in the rightmost column, carry over 0 to the next column.

   012.4
+  138.9
---------
     51.3


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

   012.4
+  138.9
---------
     151.3

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

The final result is 151.3.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
12.5	142.9	155.4	12.5 plus 142.9
12.6	151.9	164.5	12.6 plus 151.9
12.7	153.9	166.6	12.7 plus 153.9
1.5	6.5	8	1.5 plus 6.5
8.4	9	17.4	8.4 plus 9
2.1	9	11.1	2.1 plus 9