4.2 Plus 4 Addition :

Number 1	Number 2	Answer
4.2	4	8.2

How to calculate 4.2 plus 4 ?

Let's break down the addition of 4.2 and 400 step by step:

   4.2      <-- Start with the rightmost column
+  400
---------

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

   4.2
+  400
---------
     2


    Add the digits in the rightmost column:
        4 + 4 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   4.2
+  400
---------
     8.2

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

The final result is 8.2.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4.3	12	16.3	4.3 plus 12
4.4	20	24.4	4.4 plus 20
4.5	25	29.5	4.5 plus 25
0.3	1.4	1.7	0.3 plus 1.4
5.8	7.8	13.6	5.8 plus 7.8
4	3.9	7.9	4 plus 3.9