8.9 Plus 4 Addition :

Number 1	Number 2	Answer
8.9	4	12.9

How to calculate 8.9 plus 4 ?

Let's break down the addition of 8.9 and 400 step by step:

   8.9      <-- Start with the rightmost column
+  400
---------

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

   8.9
+  400
---------
     9


    Add the digits in the rightmost column:
        8 + 4 + 1 = 12
        Write down 2 in the rightmost column, carry over 1 to the next column.

   8.9
+  400
---------
     2.9

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

The final result is 12.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
9	8	17	9 plus 8
9.1	12	21.1	9.1 plus 12
9.2	21	30.2	9.2 plus 21
8.7	3.1	11.8	8.7 plus 3.1
7.5	1.5	9	7.5 plus 1.5
7.4	8.2	15.6	7.4 plus 8.2