8.7 Plus 129.9 Addition :

Number 1	Number 2	Answer
8.7	129.9	138.6

How to calculate 8.7 plus 129.9 ?

Let's break down the addition of 008.7 and 129.9 step by step:

   008.7      <-- Start with the rightmost column
+  129.9
---------

    Add the digits in the rightmost column:
        7 + 9 + 1 = 16
        Write down 6 in the rightmost column, carry over 1 to the next column.

   008.7
+  129.9
---------
     6


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

   008.7
+  129.9
---------
     8.6


    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.

   008.7
+  129.9
---------
     38.6


    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.

   008.7
+  129.9
---------
     138.6

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

The final result is 138.6.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.8	136.9	145.7	8.8 plus 136.9
8.9	142.9	151.8	8.9 plus 142.9
9	148.9	157.9	9 plus 148.9
7.8	3.9	11.7	7.8 plus 3.9
6.6	0.7	7.3	6.6 plus 0.7
1	5.4	6.4	1 plus 5.4