2.1 Plus 4 Addition :

Number 1	Number 2	Answer
2.1	4	6.1

How to calculate 2.1 plus 4 ?

Let's break down the addition of 2.1 and 400 step by step:

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

    Add the digits in the rightmost column:
        1 + 0 + 0 = 1
        Write down 1 in the rightmost column, carry over 0 to the next column.

   2.1
+  400
---------
     1


    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.

   2.1
+  400
---------
     6.1

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

The final result is 6.1.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
2.2	10	12.2	2.2 plus 10
2.3	13	15.3	2.3 plus 13
2.4	22	24.4	2.4 plus 22
7	6.5	13.5	7 plus 6.5
9.4	3.7	13.1	9.4 plus 3.7
4.2	8	12.2	4.2 plus 8