9.9 Plus 128.5 Addition :

Number 1	Number 2	Answer
9.9	128.5	138.4

How to calculate 9.9 plus 128.5 ?

Let's break down the addition of 009.9 and 128.5 step by step:

   009.9      <-- Start with the rightmost column
+  128.5
---------

    Add the digits in the rightmost column:
        9 + 5 + 1 = 14
        Write down 4 in the rightmost column, carry over 1 to the next column.

   009.9
+  128.5
---------
     4


    Add the digits in the rightmost column:
        9 + 8 + 1 = 18
        Write down 8 in the rightmost column, carry over 1 to the next column.

   009.9
+  128.5
---------
     8.4


    Add the digits in the rightmost column:
        0 + 2 + 0 = 3
        Write down 3 in the rightmost column, carry over 0 to the next column.

   009.9
+  128.5
---------
     38.4


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

   009.9
+  128.5
---------
     138.4

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

The final result is 138.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	131.5	141.5	10 plus 131.5
10.1	135.5	145.6	10.1 plus 135.5
10.2	137.5	147.7	10.2 plus 137.5
6.9	7.6	14.5	6.9 plus 7.6
1.5	6.2	7.7	1.5 plus 6.2
1.3	2.1	3.4	1.3 plus 2.1