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	13	22	9 plus 13
9.1	16	25.1	9.1 plus 16
9.2	25	34.2	9.2 plus 25
3	8.5	11.5	3 plus 8.5
2.4	1.1	3.5	2.4 plus 1.1
5.9	8.1	14	5.9 plus 8.1