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	11	17.5	6.5 plus 11
6.6	18	24.6	6.6 plus 18
6.7	23	29.7	6.7 plus 23
8.8	4.6	13.4	8.8 plus 4.6
9	5.1	14.1	9 plus 5.1
9.1	7.9	17	9.1 plus 7.9