8.4 Plus 1 Addition :

Number 1	Number 2	Answer
8.4	1	9.4

How to calculate 8.4 plus 1 ?

Let's break down the addition of 8.4 and 100 step by step:

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

    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
+  100
---------
     4


    Add the digits in the rightmost column:
        8 + 1 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   8.4
+  100
---------
     9.4

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

The final result is 9.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.5	7	15.5	8.5 plus 7
8.6	10	18.6	8.6 plus 10
8.7	16	24.7	8.7 plus 16
4.7	0.8	5.5	4.7 plus 0.8
1	5.5	6.5	1 plus 5.5
4.9	6	10.9	4.9 plus 6