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	140.9	153.4	12.5 plus 140.9
12.6	145.9	158.5	12.6 plus 145.9
12.7	146.9	159.6	12.7 plus 146.9
0.7	9.9	10.6	0.7 plus 9.9
1.8	2.3	4.1	1.8 plus 2.3
3.3	2.1	5.4	3.3 plus 2.1