3.1 Plus 4 Addition :

Number 1	Number 2	Answer
3.1	4	7.1

How to calculate 3.1 plus 4 ?

Let's break down the addition of 3.1 and 400 step by step:

   3.1      <-- 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.

   3.1
+  400
---------
     1


    Add the digits in the rightmost column:
        3 + 4 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   3.1
+  400
---------
     7.1

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

The final result is 7.1.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
3.2	12	15.2	3.2 plus 12
3.3	18	21.3	3.3 plus 18
3.4	19	22.4	3.4 plus 19
3.5	3.5	7	3.5 plus 3.5
5.2	6.8	12	5.2 plus 6.8
9	9.9	18.9	9 plus 9.9