6.4 Plus 9 Addition :

Number 1	Number 2	Answer
6.4	9	15.4

How to calculate 6.4 plus 9 ?

Let's break down the addition of 6.4 and 900 step by step:

   6.4      <-- 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.

   6.4
+  900
---------
     4


    Add the digits in the rightmost column:
        6 + 9 + 1 = 15
        Write down 5 in the rightmost column, carry over 1 to the next column.

   6.4
+  900
---------
     5.4

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

The final result is 15.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
6.5	18	24.5	6.5 plus 18
6.6	21	27.6	6.6 plus 21
6.7	26	32.7	6.7 plus 26
8.9	4	12.9	8.9 plus 4
9.4	4.4	13.8	9.4 plus 4.4
8.9	2.2	11.1	8.9 plus 2.2