3.9 Plus 1 Addition :

Number 1	Number 2	Answer
3.9	1	4.9

How to calculate 3.9 plus 1 ?

Let's break down the addition of 3.9 and 100 step by step:

   3.9      <-- Start with the rightmost column
+  100
---------

    Add the digits in the rightmost column:
        9 + 0 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   3.9
+  100
---------
     9


    Add the digits in the rightmost column:
        3 + 1 + 0 = 4
        Write down 4 in the rightmost column, carry over 0 to the next column.

   3.9
+  100
---------
     4.9

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

The final result is 4.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4	8	12	4 plus 8
4.1	17	21.1	4.1 plus 17
4.2	19	23.2	4.2 plus 19
2.1	4.6	6.7	2.1 plus 4.6
5.4	6	11.4	5.4 plus 6
2.5	3.5	6	2.5 plus 3.5