8.7 Plus 121 Addition :

Number 1	Number 2	Answer
8.7	121	129.7

How to calculate 8.7 plus 121 ?

Let's break down the addition of 008.7 and 12100 step by step:

   008.7      <-- Start with the rightmost column
+  12100
---------

    Add the digits in the rightmost column:
        7 + 0 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   008.7
+  12100
---------
     7


    Add the digits in the rightmost column:
        8 + 1 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   008.7
+  12100
---------
     9.7


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

   008.7
+  12100
---------
     29.7


    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
+  12100
---------
     129.7

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

The final result is 129.7.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.8	129	137.8	8.8 plus 129
8.9	132	140.9	8.9 plus 132
9	141	150	9 plus 141
2.8	9	11.8	2.8 plus 9
9.7	0.6	10.3	9.7 plus 0.6
9.2	5.2	14.4	9.2 plus 5.2