3.9 Plus 6.9 Addition :

Number 1	Number 2	Answer
3.9	6.9	10.8

How to calculate 3.9 plus 6.9 ?

Let's break down the addition of 3.9 and 6.9 step by step:

   3.9      <-- Start with the rightmost column
+  6.9
---------

    Add the digits in the rightmost column:
        9 + 9 + 1 = 18
        Write down 8 in the rightmost column, carry over 1 to the next column.

   3.9
+  6.9
---------
     8


    Add the digits in the rightmost column:
        3 + 6 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   3.9
+  6.9
---------
     0.8

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

The final result is 10.8.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4	9.9	13.9	4 plus 9.9
4.1	18.9	23	4.1 plus 18.9
4.2	24.9	29.1	4.2 plus 24.9
1.6	0.4	2	1.6 plus 0.4
0.8	1.7	2.5	0.8 plus 1.7
9.7	8.3	18	9.7 plus 8.3