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	134.9	143.7	8.8 plus 134.9
8.9	137.9	146.8	8.9 plus 137.9
9	143.9	152.9	9 plus 143.9
0.3	2.8	3.1	0.3 plus 2.8
1.7	0.3	2	1.7 plus 0.3
6.6	7.4	14	6.6 plus 7.4