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	14	22.5	8.5 plus 14
8.6	23	31.6	8.6 plus 23
8.7	29	37.7	8.7 plus 29
0.3	1	1.3	0.3 plus 1
1.2	7.1	8.3	1.2 plus 7.1
7.4	8	15.4	7.4 plus 8