12.8 Plus 387.1 Addition :

Number 1	Number 2	Answer
12.8	387.1	399.9

How to calculate 12.8 plus 387.1 ?

Let's break down the addition of 012.8 and 387.1 step by step:

   012.8      <-- Start with the rightmost column
+  387.1
---------

    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.

   012.8
+  387.1
---------
     9


    Add the digits in the rightmost column:
        2 + 7 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   012.8
+  387.1
---------
     9.9


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

   012.8
+  387.1
---------
     99.9


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

   012.8
+  387.1
---------
     399.9

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

The final result is 399.9.

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Number 1	Number 2	ANSWER:	HOW TO ?
12.9	392.1	405	12.9 plus 392.1
13	401.1	414.1	13 plus 401.1
13.1	407.1	420.2	13.1 plus 407.1
2.1	7.4	9.5	2.1 plus 7.4
5.9	1.1	7	5.9 plus 1.1
9.7	3.4	13.1	9.7 plus 3.4