8.4 Plus 4.2 Addition :

Number 1	Number 2	Answer
8.4	4.2	12.6

How to calculate 8.4 plus 4.2 ?

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

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

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

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


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

   8.4
+  4.2
---------
     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 ?
8.5	11.2	19.7	8.5 plus 11.2
8.6	20.2	28.8	8.6 plus 20.2
8.7	29.2	37.9	8.7 plus 29.2
6.4	7.7	14.1	6.4 plus 7.7
8.8	6	14.8	8.8 plus 6
1.4	4.3	5.7	1.4 plus 4.3