4.2 Plus 8.4 Addition :

Number 1	Number 2	Answer
4.2	8.4	12.6

How to calculate 4.2 plus 8.4 ?

Let's break down the addition of 4.2 and 8.4 step by step:

   4.2      <-- Start with the rightmost column
+  8.4
---------

    Add the digits in the rightmost column:
        2 + 4 + 0 = 6
        Write down 6 in the rightmost column, carry over 0 to the next column.

   4.2
+  8.4
---------
     6


    Add the digits in the rightmost column:
        4 + 8 + 1 = 12
        Write down 2 in the rightmost column, carry over 1 to the next column.

   4.2
+  8.4
---------
     2.6

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

The final result is 12.6.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4.3	13.4	17.7	4.3 plus 13.4
4.4	19.4	23.8	4.4 plus 19.4
4.5	25.4	29.9	4.5 plus 25.4
4.9	9.2	14.1	4.9 plus 9.2
7.8	1.2	9	7.8 plus 1.2
1	8.9	9.9	1 plus 8.9