4.2 Plus 7.9 Addition :

Number 1	Number 2	Answer
4.2	7.9	12.1

How to calculate 4.2 plus 7.9 ?

Let's break down the addition of 4.2 and 7.9 step by step:

   4.2      <-- Start with the rightmost column
+  7.9
---------

    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.

   4.2
+  7.9
---------
     1


    Add the digits in the rightmost column:
        4 + 7 + 1 = 12
        Write down 2 in the rightmost column, carry over 1 to the next column.

   4.2
+  7.9
---------
     2.1

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

The final result is 12.1.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4.3	14.9	19.2	4.3 plus 14.9
4.4	18.9	23.3	4.4 plus 18.9
4.5	25.9	30.4	4.5 plus 25.9
2.3	6.6	8.9	2.3 plus 6.6
5.9	4	9.9	5.9 plus 4
6.7	9.9	16.6	6.7 plus 9.9