4.2 Plus 12.9 Addition :

Number 1	Number 2	Answer
4.2	12.9	17.1

How to calculate 4.2 plus 12.9 ?

Let's break down the addition of 04.2 and 12.9 step by step:

   04.2      <-- Start with the rightmost column
+  12.9
---------

    Add the digits in the rightmost column:
        2 + 9 + 1 = 11
        Write down 1 in the rightmost column, carry over 1 to the next column.

   04.2
+  12.9
---------
     1


    Add the digits in the rightmost column:
        4 + 2 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   04.2
+  12.9
---------
     7.1


    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.

   04.2
+  12.9
---------
     17.1

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

The final result is 17.1.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4.3	14.9	19.2	4.3 plus 14.9
4.4	23.9	28.3	4.4 plus 23.9
4.5	24.9	29.4	4.5 plus 24.9
1.9	3.7	5.6	1.9 plus 3.7
7	9.7	16.7	7 plus 9.7
5	3.9	8.9	5 plus 3.9