15.9 Plus 42 Addition :

Number 1	Number 2	Answer
15.9	42	57.9

How to calculate 15.9 plus 42 ?

Let's break down the addition of 15.9 and 4200 step by step:

   15.9      <-- Start with the rightmost column
+  4200
---------

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

   15.9
+  4200
---------
     9


    Add the digits in the rightmost column:
        5 + 2 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   15.9
+  4200
---------
     7.9


    Add the digits in the rightmost column:
        1 + 4 + 0 = 5
        Write down 5 in the rightmost column, carry over 0 to the next column.

   15.9
+  4200
---------
     57.9

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

The final result is 57.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
16	47	63	16 plus 47
16.1	50	66.1	16.1 plus 50
16.2	59	75.2	16.2 plus 59
6	0.4	6.4	6 plus 0.4
1.5	9.4	10.9	1.5 plus 9.4
7.3	9.7	17	7.3 plus 9.7