8.4 Plus 9 Addition :

Number 1	Number 2	Answer
8.4	9	17.4

How to calculate 8.4 plus 9 ?

Let's break down the addition of 8.4 and 900 step by step:

   8.4      <-- Start with the rightmost column
+  900
---------

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

   8.4
+  900
---------
     4


    Add the digits in the rightmost column:
        8 + 9 + 1 = 17
        Write down 7 in the rightmost column, carry over 1 to the next column.

   8.4
+  900
---------
     7.4

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

The final result is 17.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.5	15	23.5	8.5 plus 15
8.6	22	30.6	8.6 plus 22
8.7	23	31.7	8.7 plus 23
7.7	0.8	8.5	7.7 plus 0.8
3.3	1.2	4.5	3.3 plus 1.2
4	2.2	6.2	4 plus 2.2