30.9 Plus 42 Addition :

Number 1	Number 2	Answer
30.9	42	72.9

How to calculate 30.9 plus 42 ?

Let's break down the addition of 30.9 and 4200 step by step:

   30.9      <-- 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.

   30.9
+  4200
---------
     9


    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.

   30.9
+  4200
---------
     2.9


    Add the digits in the rightmost column:
        3 + 4 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   30.9
+  4200
---------
     72.9

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

The final result is 72.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
31	49	80	31 plus 49
31.1	54	85.1	31.1 plus 54
31.2	61	92.2	31.2 plus 61
1.8	6	7.8	1.8 plus 6
1.8	4.2	6	1.8 plus 4.2
9.7	7.2	16.9	9.7 plus 7.2