8.4 Plus 9.9 Addition :

Number 1	Number 2	Answer
8.4	9.9	18.3

How to calculate 8.4 plus 9.9 ?

Let's break down the addition of 8.4 and 9.9 step by step:

   8.4      <-- Start with the rightmost column
+  9.9
---------

    Add the digits in the rightmost column:
        4 + 9 + 1 = 13
        Write down 3 in the rightmost column, carry over 1 to the next column.

   8.4
+  9.9
---------
     3


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

   8.4
+  9.9
---------
     8.3

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

The final result is 18.3.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.5	12.9	21.4	8.5 plus 12.9
8.6	15.9	24.5	8.6 plus 15.9
8.7	21.9	30.6	8.7 plus 21.9
4	3.9	7.9	4 plus 3.9
1.5	7.9	9.4	1.5 plus 7.9
1.6	6.2	7.8	1.6 plus 6.2